DE_CUONG_ON_THI_MON_VI_XU_LY_co dap an(1)

8/6/2019 DE_CUONG_ON_THI_MON_VI_XU_LY_co dap an(1)

1/64

cng n thi mn Vi x l h Cao ng & i hc. 1

i Hc Thi Nguyn

Trng H CNTT-TTKhoa Cng ngh iu Khin T ng

Sinh Vin : L Vn Thanh KT K8A

CNG N THI MN VI X L.(H CAO NG & I HC)

Ngy cp nht: 23/05/2011S cu: 533

1. Chip vi iu khin 8051 c sn xut ln u tin vo nm no? Do nh sn xut noch to?a. 1976 - Hng Intel b. 1976 - Hng Motorolac. 1980 - Hng Intel d. 1980 - Hng Zilog.

2. M lnh t b nh chng trnh bn ngoi, sau khi c CPU c vo s c cha ti

b phn no trong CPU.a.Thanh ghi PCb. Thanh ghi IRc. n v gii m lnh v iu khind. ALU.

3. B phn no trong CPU dng lu gi a ch ca lnh k tip trong b nh chngtrnh m CPU cn thc hin.a.Thanh ghi PCb. Thanh ghi IRc. n v gii m lnh v iu khind. ALU.

4. Nhim v ca CPU l:a. iu hnh hot ng ca ton h thng theo nh ca ngi s dng thng qua

chng trnh iu khin.b. Thi hnh chng trnh theo vng kn gi l chu k lnh.c. Giao tip vi cc thit b xut nhp.d. C hai cu a v b u ng.

5. M BCD nn l:a. Kt hp hai s BCD thnh 1 byte.

b. Thay 4 bit cao bng 0H.c. S BCD di 1 byte.d. Thay 4 bit thp bng 0H.

6. M b 2 ca 1 s nh phn c to ra bng cch:a. o trng thi tt c cc bit ca s nh phn.b. Cng thm 1 vo m b 1c. Cng thm 2 vo m b 1d. Ly b 1 tr i 1

7. M b 1 ca 1 s nh phn c to ra bng cch:a. o trng thi tt c cc bit ca s nh phn.


2/64

b. Cng thm 1 vo m b 1c. Cng thm 2 vo m b 1d. Ly b 1 tr i 1


8. Giao tip song song l phng thc giao tip (so snh vi giao tip ni tip):a. Truyn t hai bit tr ln, tc truyn chm, khong cch truyn gn.

b. Truyn t hai bit tr ln, tc truyn chm, khong cch truyn xa.c. Truyn t hai bit tr ln, tc truyn nhanh, khong cch truyn gn.d. Truyn t hai bit tr ln, tc truyn nhanh, khong cch truyn xa.

9. Giao tip ni tip l phng thc giao tip (so snh vi giao tip song song):a. Truyn tng bit, tc truyn chm, khong cch truyn gn.b. Truyn tng bit, tc truyn chm, khong cch truyn xa.c. Truyn tng bit, tc truyn nhanh, khong cch truyn gn.d. Truyn tng bit, tc truyn nhanh, khong cch truyn xa.

10.ROM l loi b nh bn dn c c tnh:a. Cho php c d liu t ROM, khng cho php ghi d liu vo ROM, mt d liu khi mt

ngun in.b. Cho php c d liu t ROM, khng cho php ghi d liu vo ROM, khng mt d

liu khi mt ngun in.c. Cho php c d liu t ROM, cho php ghi d liu vo ROM, mt d liu khi mt

ngun in.

d. Cho php c d liu t ROM, cho php ghi d liu vo ROM, khng mt d liu khi mtngun in.11.RAM l loi b nh bn dn c c tnh:

a. Cho php c d liu t RAM, khng cho php ghi d liu vo RAM, mt d liu khi mtngun in.

b. Cho php c d liu t RAM, khng cho php ghi d liu vo RAM, khng mt d liukhi mt ngun in.

c. Cho php c d liu t RAM, cho php ghi d liu vo RAM, mt d liu khi mtngun in.

d. Cho php c d liu t RAM, cho php ghi d liu vo RAM, khng mt d liu khi mtngun in.12.Loi b nh ROM cho php ta ghi d liu vo v xo d liu i bng tia cc tm:

a. PROM b. MROM c. UV-EPROM d. Flash ROM.13.Loi b nh ROM cho php ta ghi d liu vo v xo d liu i bng tn hiu in:

a. PROM b. MROM c. UV-EPROM d. Flash ROM14.Loi b nh bn dn c th mt d liu ngay khi vn cn ngun in cung cp:

a. SRAM b. DRAM c. PROM d. MROM.15.Loi b nh ROM cho php ta c th ghi d liu vo v xo d liu:

a. PROM b. MROMc. EPROM d. C ba cu a, b, c u ng.

16.Qu trnh lm ti (Refresh) d liu l qu trnh cn thit i vi loi b nh bn dn:a. SRAM b. DRAM c. EEPROM d. Flash ROM.17.B nh bn dn 8 bit c m s 62512 cho bit dung lng ca b nh ny:a. 512 KB b. 512 Kbit c. 62512 Kbit d. 62512 KB

18.B nh bn dn 8 bit c m s 62256 cho bit dung lng ca b nh ny:a. 62256 KB b. 62256 Kbit c. 256 Kbit d. 256 KB


20.B nh bn dn 8 bit c m s 6264 cho bit dung lng ca b nh ny:


3/64

a. 64 Kbit b. 6264 Kbit c. 6264 KB d. 64 KB21.B nh bn dn 8 bit c m s 6232 cho bit dung lng ca b nh ny:

a. 6232 KB b. 32 KB c. 6232 Kbit d. 32 Kbit



23.B nh bn dn 8 bit c m s 27512 cho bit dung lng ca b nh ny:a. 27512 KB b. 64 KB c. 27512 Kbit d. 64 Kbit.

24.B nh bn dn 8 bit c m s 27256 cho bit dung lng ca b nh ny:a. 27256 KB b. 32 Kbit c. 32 KB d. 27256 Kbit.

25.B nh bn dn 8 bit c m s 27128 cho bit dung lng ca b nh ny:a. 27128 KB b. 27128 Kbit c. 16 Kbit d. 16 KB .


27.B nh bn dn 8 bit c m s 2732 cho bit dung lng ca b nh ny:a. 2732 KB b. 4 KB c. 2732 Kbit d. 4 Kbit.


29.B nh bn dn 8 bit c m s 6116 cho bit s chn a ch ca b nh ny:a. 9 chn b. 10 chn c. 11 chn d. 12 chn

30.B nh bn dn 8 bit c m s 2732 cho bit s chn a ch ca b nh ny:a. 9 chn b. 10 chn c. 11 chn d. 12 chn31.B nh bn dn 8 bit c m s 2764 cho bit s chn a ch ca b nh ny:a. 13 chn b. 14 chn c. 15 chn d. 16 chn




35.B nh bn dn 8 bit c m s 2716 cho bit s chn d liu ca b nh ny:a. 8 chn b. 9 chn c. 10 chn d. 11 chn.

36.B nh bn dn 8 bit c m s 2732 cho bit s chn d liu ca b nh ny:a. 14 chn b. 12 chn c. 10 chn d. 8 chn



39.Trong h thng bus ca my tnh, loi bus no l bus 2 chiu:a. Bus d liu b. Bus a chc. Bus iu khin d. C ba cu a, b, c u ng.

40.Trong h thng bus ca my tnh, bus a ch c chiu di chuyn thng tin a ch i t:a. T CPU n b nh v thit b ngoi vi.

b. T b nh v thit b ngoi vi n CPU.c. C hai cu a v b u ng.d. C hai cu a v b u sai.

41.Trong h thng bus ca my tnh, bus d liu c chiu di chuyn thng tin d liu i t:a. T CPU n b nh v thit b ngoi vi.

b. T b nh v thit b ngoi vi n CPU.c. C hai cu a v b u ng.


4/64


42.Mt b vi x l c 20 ng dy a ch. Cho bit s lng v tr nh m b vi x l c kh nng truy xut:

a. 1024 b. 1024 K c. 1024 M d. 1024 G43.S lng b m/b nh thi (Timer) c trong chip vi iu khin 8051 l:a. 1 b. 2 c. 3 d. 4

44.Dung lng b nh d liu c trong chip 8051 l:a. 128 byte b. 256 byte c. 8 KB d. 4 KB

45.Dung lng b nh chng trnh c trong chip 8051 l:a. 128 byte b. 256 byte c. 8 KB d. 4 KB

46.Chip vi iu khin 8051 c bao nhiu port xut nhp d liu:a. 1 b. 2 c. 3 d. 4

47.Dung lng b nh chng trnh ngoi v b nh d liu ngoi ti a m chip 8051 ckh nng truy xut l:

a. 32 KB b. 64 KB c. 128 KB d. 256 KB.48.Trong chip vi iu khin 8051, cc port xut nhp c hai cng dng l:a. P1, P2, P3 b. P0, P1, P2 c. P0, P2, P3 d. P0, P1, P3

49.Trong chip vi iu khin 8051, port ch? c chc nng xut nhp c bn l:a. P0 b. P1 c. P2 d. P3

50.Khi cc port xut nhp ca 8051 ng vai tr l port xut nhp d liu th port no cnphi c in tr ko ln bn ngoi:a. P0 b. P1 c. P2 d. P3

51.Khi chip 8051 s dng b nh bn ngoi th port no ng vai tr l bus a ch byte thpv bus d liu a hp ( AD0.. AD7 ):a. P0 b. P1 c. P2 d. P3

52.Khi chip 8051 s dng b nh bn ngoi th port no ng vai tr l bus a ch byte cao:a. P0 b. P1 c. P2 d. P3

53.Khi chip 8051 s dng b nh bn ngoi hay cc chc nng c bit th port no ng vaitr l cc tn hiu iu khin:a. P0 b. P1 c. P2 d. P3

54.PSEN l tn hiu iu khin:a. Cho php truy xut (c) b nh chng trnh bn ngoi.

b. Cho php truy xut (s dng) b nh chng trnh bn ngoi.c. Cho php cht a ch thc hin vic gii a hp.d. Cho php thit lp li trng thi hot ng cu chip 8051.

55.EA l tn hiu iu khin:a. Cho php truy xut (c) b nh chng trnh bn ngoi.b. Cho php truy xut (s dng) b nh chng trnh bn ngoi.c. Cho php cht a ch thc hin vic gii a hp.d. Cho php thit lp li ch hot ng cu chip 8051

56.ALE l tn hiu iu khin:a. Cho php truy xut (c) b nh chng trnh bn ngoi.

b. Cho php truy xut (s dng) b nh chng trnh bn ngoi.c. Cho php cht a ch thc hin vic gii a hp.d. Cho php thit lp li ch hot ng cu chip 8051.

57.RST l tn hiu iu khin:a. Cho php truy xut (c) b nh chng trnh bn ngoi.b. Cho php truy xut (s dng) b nh chng trnh bn ngoi.c. Cho php cht a ch thc hin vic gii a hp.d. Cho php thit lp li ch hot ng cu chip 8051.


5/64


58.WR l tn hiu iu khin:a. Cho php c thng tin t b nh d liu ngoi.b. Cho php ghi thng tin vo b nh d liu ngoi.c. Cho php c thng tin t b nh chng trnh ngoi.

a. Cho php ghi thng tin vo b nh chng trnh ngoi.59.RD l tn hiu iu khin:a. Cho php c thng tin t b nh d liu ngoi.

b. Cho php ghi thng tin vo b nh d liu ngoi.c. Cho php c thng tin t b nh chng trnh ngoi.a. Cho php ghi thng tin vo b nh chng trnh ngoi.

60.Tn s ph dng ca thch anh s dng cho hu ht cc chip vi iu khin h MCS-51 l:a. 10 MHZ b. 11 MHZ c. 12 MHZ d. 13 MHZ

61.Chn PSEN ca chip 8051 thng c ni vi chn no ca b nh chng trnh bnngoi:a. CS\ b. WR\ c. RD\ d.OE\

62.Nu tn s xung clock ca mch dao ng trong chip l 12 MHZ th tn s ca tn hiu tichn ALE l bao nhiu:a. 12 MHZ b. 6 MHZ c. 2 MHZ d. 1 MHZ

63.Khi dng mch dao ng TTL bn ngoi to tn hiu xung clock cho chip 8051 th tnhiu xung clock phi c a vo chn:a. CS\ b. INT0\ c. XTAL1 d.XTAL2

64.Cc dy thanh ghi (bank) ca chip 8051 nm trong:a. B nh chng trnh bn trong.

b. B nh chng trnh bn ngoi.c. B nh d liu bn trong.d. B nh d liu bn ngoi.

65.Khng gian b nh chng trnh bn trong ca chip 8051 c dung lng ti a l:a. 128 byte b. 256 byte c. 4 KB d.8KB

66.Khng gian b nh d liu bn trong ca chip 8051 c dung lng ti a l:a. 128 byte b. 256 byte c. 4 KB d.8KB

67.Trong khng gian b nh d liu bn trong ca chip 8051, cc dy thanh ghi c a ch:a. 00H - 1FH b. 20H - 2FH c. 30H -7FH d. 80H - FFH

68.Trong khng gian b nh d liu bn trong ca chip 8051, vng RAM nh a ch bit ca ch:a. 00H - 1FH b. 20H - 2FH c. 30H -7FH d. 80H - FFH

69.Trong khng gian b nh d liu bn trong ca chip 8051, vng RAM a chc nng ca ch:a. 00H - 1FH b. 20H - 2FH c. 30H -7FH d. 80H - FFH

70.Trong khng gian b nh d liu bn trong ca chip 8051, cc thanh ghi chc nng cbit (SFR) c a ch:a. 00H - 1FH b. 20H - 2FH c. 30H -7FH d. 80H - FFH

71.Khi thc hin php nhn 2 s 8 bit vi nhau th byte cao ca kt qu s c cha trongthanh ghi no?a. Thanh ghi A b. Thanh ghi B c. Thanh ghi TH1 d. Thanh ghi TL1.

72.Khi thc hin php nhn 2 s 8 bit vi nhau th byte thp ca kt qu s c cha trongthanh ghi no?a. Thanh ghi A b. Thanh ghi B c.Thanh ghi TH1 d. Thanh ghi TL1.


6/64


73.Khi thc hin php chia 2 s 8 bit vi nhau th thng s ca php chia s c chatrong thanh ghi no?a. Thanh ghi SP b. Thanh ghi PSW c. Thanh ghi A d. Thanh ghi B

74.Khi thc hin php chia 2 s 8 bit vi nhau th s d ca php chia s c cha trongthanh ghi no?a. Thanh ghi SP b. Thanh ghi PSW c. Thanh ghi A d. Thanh ghi B

75.Khi CPU thc hin php tnh s hc c nh th chip 8051 t c no ln mc 1 ?a. C nh CY b. C nh ph AC c. C F0 d. C trn OV

76. bo 4 bit thp ca kt qu tnh ton thuc khong OH - 9H hay thuc khong AH -FH th chip 8051 s dng c no?a. C nh CY b. C nh ph AC c. C F0 d. C trn OV

77. bo kt qu tnh ton cha trong thanh ghi A bng 0 hay khc 0 th chip 8051 s dngc no?a. C nh CY b. C nh ph AC c. C F0 d. C trn OV

78. bo kt qu tnh ton ca php ton s hc (php ton c du) c nm trong khong t-127 n +128 hay khng th chip 8051 s dng c no?a. C nh CY b. C nh ph AC c. C F0 d. C trn OV

79. bo s ch s 1 trong thanh ghi A l s chn hay l th chip 8051 s dng c no?a. C nh CY b. C nh ph AC c. C P d.C trn OV

80. chn dy thanh ghi tch cc l dy 2 th cc bit RS0, RS1 phi c gi tr l bao nhiu?a. RS0 = 0, RS1 = 0 c. RS0 = 1, RS1 = 0b. RS0 = 0, RS1 = 1 d. RS0 = 1, RS1 = 1

81. chn dy thanh ghi tch cc l dy 1 th cc bit RS0, RS1 phi c gi tr l bao nhiu?a. RS0 = 0, RS1 = 0 c. RS0 = 1, RS1 = 0

b. RS0 = 0, RS1 = 1 d. RS0 = 1, RS1 = 182. chn dy thanh ghi tch cc l dy 3 th cc bit RS0, RS1 phi c gi tr l bao nhiu?

a. RS0 = 0, RS1 = 0 c. RS0 = 1, RS1 = 0b. RS0 = 0, RS1 = 1 d. RS0 = 1, RS1 = 1

83. chn dy thanh ghi tch cc l dy 0 th cc bit RS0, RS1 phi c gi tr l bao nhiu?a. RS0 = 0, RS1 = 0 c. RS0 = 1, RS1 = 0

b. RS0 = 0, RS1 = 1 d. RS0 = 1, RS1 = 184.i vi chip 8051 th vng nh c dng lm ngn xp (stack) c lu gi trong:

a. B nh chng trnh bn trong.b. B nh chng trnh bn ngoi.c. B nh d liu bn trong.d. B nh d liu bn ngoi.

85.Vng nh c dng lm ngn xp (stack) c a ch kt thc l:a. 7FH b. FFH c. 2 FH d. 08 H

86.Nu khng khi ng thanh ghi SP th vng nh ca ngn xp (stack) c a ch bt ul:a. 80H b. 08H c. 00H d. 30H

87.Nu thanh ghi SP c gi tr l 5FH th vng nh ca ngn xp (stack) c a ch bt u:a. 5EH b. 5FH c. 6OH d. 61H

88.Nu thanh ghi SP c gi tr l 21H th vng nh ca ngn xp (stack) c a ch bt u:a. 20H b. 21H c. 22H d. 23H

89.Nu thanh ghi SP c gi tr l 59H th vng nh ca ngn xp (stack) c a ch bt u:a. 5AH b. 58H c. 5BH d. 59H

90.Nu ngi lp trnh khng khi ng thanh ghi SP th khi 8051 hot ng n s t ngnp vo trong thanh ghi SP mt gi tr l bao nhiu ?a. 80H b. 08H c. 70H d. 07H


7/64


91.Thanh ghi DPTR c dng cha a ch ca nh cn truy xut thuc b nh:a. ROM trong b. ROM ngoi c. RAM trong d. RAM ngoi

92.Thanh ghi DPTR l mt thanh ghi:a. 4 bit b. 8 bit c. 16 bit d. 32 bit

93.Chip 8051 c bao nhiu port xut nhp d liu di dng song song:a. 1 b. 2 c. 3 d. 494.Chn nhn d liu ca port ni tip:

a. TXD b. RXD c. INT0 d. T095.Khi b nh thi trong chip 8051 ng vai tr l b m s kin (Counter) th n s nhn

xung nhp t chn no ?a. TXD b. RXD c. INT0 d. T0

96.Chn pht d liu ca port ni tip:a. TXD b. RXD c. INT0 d. T0

97. nhn bit c tn hiu ngt t ngun bn ngoi hay khng th chip 8051 s dng chnno ?

a. TXD b. RXD c. INT0 d. T098.Thanh ghi iu khin ch hot ng ca b nh thi trong chip 8051:

a. TIMER0 b. TIMER1 c. TMOD d. TCON99.Thanh ghi iu khin trng thi v qu trnh hot ng ca b nh thi trong chip 8051:

a. TIMER0 b. TIMER1 c. TMOD d. TCON100. ch ngun gim (Power down) th in p chn Vcc ca chip 8051 l bao nhiu

volt?a. 2V b. 3V c. 4V d. 5V

101. ch ngh (Idle) th in p chn Vcc ca chip 8051 l bao nhiu volt?a. 2V b. 3V c. 4V d. 5V

102. Nu thch anh dao ng gn bn ngoi chip 8051 c tn s l 12MHz th mt chu kmy di:a. 12 s b. 6 s c. 2 s d. 1 s

103. Lnh nhy no trong s cc lnh sau y c tm nhy n phi trong cng khi 2KBca b nh chng trnh:a.SJMP b. AJMP c. LJMP d. RJMP.

104. Lnh nhy no trong s cc lnh sau y c tm nhy n l bt c ni no trong khnggian b nh chng trnh 64KB.a. SJMP b. AJMP c. LJMP d. RJMP

105. Lnh nhy no trong s cc lnh sau y c tm nhy n l 128 byte trc lnh v 127byte sau lnh:

a. SJMP b. AJMP c. LJMP d. RJMP.106. Lnh no trong s cc lnh sau y l lnh sai:a. INC A b. DEC A c. INC DPTR d. DEC DPTR

107. Lnh nhy n a ch rel nu ni dung thanh cha (thanh ghi A) khc 0:a. JNZ rel b. JZ rel c. JNC rel d. JC rel.

108. Lnh nhy n a ch rel nu ni dung c 0 (c zero) bng 0:a. JNZ rel b. JZ rel c. JNC rel d. JC rel.

109. Lnh nhy n a ch rel nu ni dung c 0 (c zero) bng 1:a. JNZ rel b. JZ rel c. JNC rel d. JC rel.

110. Lnh nhy n a ch rel nu ni dung thanh cha (thanh ghi A) bng 0:a. JNZ rel b. JZ rel c. JNC rel d. JC rel.

111. Lnh nhy n a ch rel nu ni dung c nh bng 0:a. JNZ rel b. JZ rel c. JNC rel d. JC rel



8/64

112. Lnh nhy n a ch rel nu ni dung c nh khc 0:a. JNZ rel b. JZ rel c. JNC rel d. JC rel

113. Lnh no trong s cc lnh sau y s dng kiu nh a ch trc tip cho ton hngngun:a. MOV R0, #00H b. MOV 00H, R0c. MOV R0, 00H d. MOV 00H, @R0

114. Lnh no trong s cc lnh sau y s dng kiu nh a ch gin tip cho ton hngngun:a. MOV R0, #00H b. MOV 00H, R0c. MOV R0, 00H d. MOV 00H, @R0

115. Lnh no trong s cc lnh sau y s dng kiu nh a ch thanh ghi cho ton hngngun:a. MOV R0, #00H b. MOV 00H, R0c. MOV R0, 00H d. MOV 00H, @R0

116. Lnh no trong s cc lnh sau y s dng kiu nh a ch tc thi cho ton hngngun:a. MOV R0, #00H b. MOV 00H, R0

c. MOV R0, 00H d. MOV 00H, @R0117. Lnh no trong s cc lnh sau y s dng kiu nh a ch tng i:a. SJMP rel b. ACALL rel c. LCALL rel d. MOV A, @A+DPTR

118. Lnh no trong s cc lnh sau y s dng kiu nh a ch tuyt i:a. SJMP rel b. ACALL rel c. LCALL rel d. MOV A, @A+DPTR

119. Lnh no trong s cc lnh sau y s dng kiu nh a ch di:a. SJMP rel b. ACALL rel c. LCALL rel d. MOV A, @A+DPTR

120. Lnh no trong s cc lnh sau y s dng kiu nh a ch ch s:a. SJMP rel b. ACALL rel c. LCALL rel

121. Lnh no trong s cc lnh sau y l lnh sai:a. MOV A, #05H b. MOV A, #0FFH

c. MOV A, #35 d. MOV A, #FF0Hsai do thiu s 0122. Lnh no trong s cc lnh sau y l lnh sai:

a. MOV A, #0FFH b. MOV 255, Ac. MOV #255, A d. MOV A, #255

123. Lnh no trong s cc lnh sau y l lnh sai:a. MOV A, ACC b. MOV A, PSWc. MOV A, TH0 d. MOV A, SBUF

124. Lnh no trong s cc lnh sau y l lnh sai:a. POP A b. POP DPL c. POP SP

d. MOV A, @A+DPTR

d.POP R0


9/64

125. Lnh no trong s cc lnh sau y thuc nhm lnh s hc ca chip 8051:a. INC b. SWAP c. XCH d. CPL

126. Lnh no trong s cc lnh sau y thuc nhm lnh logic ca chip 8051:a. INC cng 1 b. SWAP tro ND c. XCH tro ND d. CPL x l

127. Lnh no trong s cc lnh sau y thuc nhm lnh di chuyn d liu ca chip 8051:a. INC b. SWAP c. XCH d. CPL

128. Lnh no trong s cc lnh sau y thuc nhm lnh x l bit ca chip 8051:a. INC b. SWAP c. XCH d. CPL

129. Lnh no trong s cc lnh sau y thuc nhm lnh r nhnh ca chip 8051:a. INC b. MOV c. CJNE d. SWAP

130. Lnh no trong s cc lnh sau y l lnh sai:a. MOV A, #0B0H b. MOV B0H, Ac. MOV #0B0H, A d. MOV A, B0H


131. Lnh di chuyn ni dung ca thanh ghi R0 vo thanh ghi A:a. MOV R0, A b. MOV A, R0 c. MOVX A, R0 d. MOV A, @R0

132. Lnh so snh ni dung ca nh 3FH vi ni dung ca thanh ghi A v nhy n a chrel nu ni dung ca chng khng bng nhau:a. CJNE A, #3FH, rel b. CJNE #3FH, A, relc. CJNE A,3FH, rel d. CJNE 3FH, A, rel

133. Lnh so snh ni dung ca nh 00H vi mt hng s c gi tr 00H v nhy n ach rel nu ni dung ca chng khng bng nhau ( ch mc nh):

a. CJNE R0, #00H, rel b. CJNE 00H, R0, relc. CJNE R0, 00H, rel d. CJNE #00H, R0, rel

134. Lnh gim ni dung ca thanh ghi R0 v nhy n a ch rel nu ni dung ca thanhghi R0 khc 0 ( ch mc nh):a. CJNE R0, #00H, rel b. DJNZ R0, relc. CJNE R0, 00H, rel so snh d. DJNZ rel, R0

135. Lnh so snh ni dung ca thanh ghi R0 vi mt hng s c gi tr 00H v nhy n ach rel nu ni dung ca chng khng bng nhau ( ch mc nh):a. CJNE R0, #00H, rel b. CJNE 00H, R0, relc. CJNE R0, 00H, rel d. CJNE #00H, R0, rel

136. Lnh ct d liu vo vng nh ngn xp (Stack):a. POP b. PUSH c. PULL d. SWAP

137. Lnh ly d liu ra t vng nh ngn xp (Stack):a. POP b. PUSH c. PULL d. SWAP

138. Lnh hon chuyn ni dung ca hai nibble (hai na 4 bit) ca thanh ghi A:a. POP b. PUSH c. PULL d. SWAP

139. Lnh di chuyn gi tr 7FH vo nh c a ch 7FH:a. MOV 7FH, 7FH b. MOV #7FH, #7FHc. MOV 7FH, #7FH d. MOV #7FH, 7FH

140. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (52H + 12H)a. CY = 0, AC = 0 b. CY = 0, AC = 1

c. CY = 1, AC = 0 d. CY = 1, AC = 1141. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (89H + 57H)a. CY = 0, AC = 0 b. CY = 0, AC = 1c. CY = 1, AC = 0 d. CY = 1, AC = 1

142. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (C3H + AAH)a. CY = 0, AC = 0 b. CY = 0, AC = 1c. CY = 1, AC = 0 d. CY = 1, AC = 1

143. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (C5H + B6H)


10/64

a. CY = 0, AC = 0 b. CY = 0, AC = 1c. CY = 1, AC = 0 d. CY = 1, AC = 1

144. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (00H - 01H)a. CY = 0, AC = 0 b. CY = 0, AC = 1c. CY = 1, AC = 0 d. CY = 1, AC = 1

145. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (83H + 49H)a. AC = 0, OV = 0 b. AC = 0, OV = 1c. AC = 1, OV = 0 d. AC = 1, OV = 1

146. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (B4H + 8BH)a. AC = 0, OV = 0 b. AC = 0, OV = 1c. AC = 1, OV = 0 d. AC = 1, OV = 1


147. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (A7H + 2FH)a. AC = 0, OV = 0 b. AC = 0, OV = 1c. AC = 1, OV = 0 d. AC = 1, OV = 1

148. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (25H + 7DH)a. AC = 0, OV = 0 b. AC = 0, OV = 1c. AC = 1, OV = 0 d. AC = 1, OV = 1

149. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (78H + 87H)a. AC = 0, P = 0 b. AC = 0, P = 1

c. AC = 1, P = 0 d. AC = 1, P = 1150. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (AAH + BDH)

a. AC = 0, P = 0 b. AC = 0, P = 1c. AC = 1, P = 0 d. AC = 1, P = 1

151. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (FFH + 01H)a. AC = 0, P = 0 b. AC = 0, P = 1c. AC = 1, P = 0 d. AC = 1, P = 1

152. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (56H + AAH)a. AC = 0, P = 0 b. AC = 0, P = 1c. AC = 1, P = 0 d. AC = 1, P = 1

153. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (22H + B5H)a. OV = 0, CY = 0 b. OV = 0, CY = 1c. OV = 1, CY = 0 d. OV = 1, CY = 1

154. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (F7H + C5H)a. OV = 0, CY = 0 b. OV = 0, CY = 1c. OV = 1, CY = 0 d. OV = 1, CY = 1

155. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (5FH + 5BH)a. OV = 0, CY = 0 b. OV = 0, CY = 1c. OV = 1, CY = 0 d. OV = 1, CY = 1

156. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (C3H + AAH)a. OV = 0, CY = 0 b. OV = 0, CY = 1

c. OV = 1, CY = 0 d. OV = 1, CY = 1157. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (53H+12H)a. CY = 0, AC = 0 b. CY = 0, AC = 1c. CY = 1, AC = 0 d. CY = 1, AC = 1

158. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (92H+89H)a. CY = 0, AC = 0 b. CY = 0, AC = 1c. CY = 1, AC = 0 d. CY = 1, AC = 1

159. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (12H+25H)


11/64


160. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (24H-89H)a. CY = 0, AC = 0 b. CY = 0, AC = 1c. CY = 1, AC = 0 d. CY = 1, AC = 1

161. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (12H+ACH)a. CY = 0, OV = 0 b. CY = 0, OV = 1c. CY = 1, OV = 0 d. CY = 1, OV = 1

162. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (56H+6FH)a. CY = 0, OV = 0 b. CY = 0, OV = 1c. CY = 1, OV = 0 d. CY = 1, OV = 1


163. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (89H-FEH)a. CY = 0, OV = 0 b. CY = 0, OV = 1c. CY = 1, OV = 0 d. CY = 1, OV = 1

164. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (1FH+CDH)a. CY = 0, OV = 0 b. CY = 0, OV = 1c. CY = 1, OV = 0 d. CY = 1, OV = 1

165. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (FFH+01H)a. CY = 0, AC = 0 b. CY = 0, AC = 1

c. CY = 1, AC = 0 d. CY = 1, AC = 1166. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (56H+9FH)


167. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (4DH+B3H)a. CY = 0, AC = 0 b. CY = 0, AC = 1c. CY = 1, AC = 0 d. CY = 1, AC = 1

168. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (92H+6EH)a. CY = 0, AC = 0 b. CY = 0, AC = 1c. CY = 1, AC = 0 d. CY = 1, AC = 1

169. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (ADH+45H)a. CY = 0, P = 0 b. CY = 0, P = 1c. CY = 1, P = 0 d. CY = 1, P = 1

170. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (56H-DAH)a. CY = 0, P = 0 b. CY = 0, P = 1c. CY = 1, P = 0 d. CY = 1, P = 1

171. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (69H-96H)a. CY = 0, P = 0 b. CY = 0, P = 1c. CY = 1, P = 0 d. CY = 1, P = 1

172. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (12H+FEH)a. CY = 0, P = 0 b. CY = 0, P = 1

c. CY = 1, P = 0 d. CY = 1, P = 1173. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (12H-65H)a. AC = 0, OV = 0 b. AC = 0, OV = 1c. AC = 1, OV = 0 d. AC = 1, OV = 1

174. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (65H+99H)a. AC = 0, OV = 0 b. AC = 0, OV = 1c. AC = 1, OV = 0 d. AC = 1, OV = 1



12/64

a. AC = 0, OV = 0 b. AC = 0, OV = 1c. AC = 1, OV = 0 d. AC = 1, OV = 1


177. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (35H-56H)a. AC = 0, P = 0 b. AC = 0, P = 1c. AC = 1, P = 0 d. AC = 1, P = 1

178. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (65H+01H)a. AC = 0, P = 0 b. AC = 0, P = 1c. AC = 1, P = 0 d. AC = 1, P = 1


179. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (12H+55H)a. AC = 0, P = 0 b. AC = 0, P = 1c. AC = 1, P = 0 d. AC = 1, P = 1

180. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (02H-89H)a. AC = 0, P = 0 b. AC = 0, P = 1c. AC = 1, P = 0 d. AC = 1, P = 1

181. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (23H+56H)a. AC = 0, OV = 0 b. AC = 0, OV = 1

c. AC = 1, OV = 0 d. AC = 1, OV = 1182. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (65H+89H)

a. AC = 0, OV = 0 b. AC = 0, OV = 1c. AC = 1, OV = 0 d. AC = 1, OV = 1


184. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (54H+89H)a. AC = 0, CY = 0 b. AC = 0, CY = 1c. AC = 1, CY = 0 d. AC = 1, CY = 1

185. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (ADH-8FH)a. OV = 0, AC = 0 b. OV = 0, AC = 1c. OV = 1, AC = 0 d. OV = 1, AC = 1

186. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (89H+CBH)a. OV = 0, AC = 0 b. OV = 0, AC = 1c. OV = 1, AC = 0 d. OV = 1, AC = 1

187. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (94H+89H)a. OV = 0, AC = 0 b. OV = 0, AC = 1c. OV = 1, AC = 0 d. OV = 1, AC = 1

188. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (65H+89H)a. OV = 0, CY = 0 b. OV = 0, CY = 1

c. OV = 1, CY = 0 d. OV = 1, CY = 1189. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (DFH-54H)a. OV = 0, P = 0 b. OV = 0, P = 1c. OV = 1, P = 0 d. OV = 1, P = 1

190. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (68H-DEH)a. OV = 0, P = 0 b. OV = 0, P = 1c. OV = 1, P = 0 d. OV = 1, P = 1



13/64

a. OV = 0, P = 0 b. OV = 0, P = 1c. OV = 1, P = 0 d. OV = 1, P = 1

192. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (21H-68H)a. OV = 0, P = 0 b. OV = 0, P = 1c. OV = 1, P = 0 d. OV = 1, P = 1

193. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (BCH+AAH)a. CY = 0, P = 0 b. CY = 0, P = 1c. CY = 1, P = 0 d. CY = 1, P = 1

194. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (CDH-98H)a. CY = 0, P = 0 b. CY = 0, P = 1c. CY = 1, P = 0 d. CY = 1, P = 1


195. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (65H-DCH)a. CY = 0, P = 0 b. CY = 0, P = 1c. CY = 1, P = 0 d. CY = 1, P = 1

196. Cho bit trng thi cc c sau khi chip 8051 thc hin php ton s hc (FFH+01H)a. CY = 0, P = 0 b. CY = 0, P = 1c. CY = 1, P = 0 d. CY = 1, P = 1

197. Kh nng fanout ca cc port 1, 2 v 3 trong chip 8051 l:a. 1 ti TTL b. 2 ti TTL c. 4 ti TTL d. 8 ti TTL

198. Kh nng fanout ca cc port 0 trong chip 8051 l:a. 1 ti TTL b. 2 ti TTL c. 4 ti TTL d. 8 ti TTL

199. Cc c c dng ch th tnh trng nh ca CPU:a. C nh CF b. C chiu IF c. C trn OF d. C TFO, TF1

200. Cng dng ca thanh ghi SP:a. Cha a ch ca d liu hin ang nh ngn xp.

b. Cha a ch ca lnh k tip c thi hnhc. Cha d liu ca qu trnh tnh ton.d. Ch vo mt a ch trong b nh.

201. Phng php xc nh hnh thc truy xut ca mt ton hng c gi l:a. Mode a ch b. a ch assembler.c. M lnh d. M gi nh

202. Mt lnh y ca ngn ng assembly gm cc phn (xp theo th t):a. M lnh, nhn lnh, ton hng v ghi ch.

b. Nhn lnh, ton hng, m lnh v ghi chu.c. Ton hng, m lnh, nhn lnh v ghi ch.d. Nhn lnh, m lnh, ton hng v ghi ch.

203. Trnh bin dch cho ngn ng Assembler c chc nng:a. Kim tra

b. Bin dch t tp tin ngun dng ASCII sang tp tin m dng BINc. Bin dch t tp tin ngun dng ASCII sang tp tin m dng DEC

d. C hai cu a v b u ng.204. Cho bit c b nh gi a ch c ca b vi x l vi 12 ng a ch:a. 64KB b. 1MB c. 4KB d. 256KB

205. Cho bit c b nh gi a ch c ca b vi x l vi 16 ng a ch:a. 64KB b. 1MB c. 4KB d. 256KB

206. Cho bit c b nh gi a ch c ca b vi x l vi 20 ng a ch:a. 64KB b. 1MB c. 4KB d. 256KB

207. Cho bit c b nh gi a ch c ca b vi x l vi 18 ng a ch:


14/64

a. 64KB b. 1MB c. 4KB d. 256KB208. Cc c c dng ch th tnh trng trn ca thanh ghi A l:

a. C nh CF c. C chiu IFb. C trn OF d. C TF0, TF1

209. Chc nng ca thanh ghi PSW:a. Dng lu gi thng tin v cc trng thi hot ng ca ALU

b. G a ch ca lnh k tip s thc hinc. Cha d liud. Dng m

210. i vi chip 8051, khi reset th vic thi hnh chng trnh lun bt u a ch:a. 0000H b. 0030H c. FFFFH d. C ba cu a, b, c u sai


211. Nu dng mt thit b ngoi vi c dung lng l8 KB th cn phi truy xut bao nhiung a ch:

a. A0.. A10 b. A0.. A11 c. A0.. A12 d. A0.. A13212. Nu dng mt thit b ngoi vi c dung lng l4 KB th cn phi truy xut bao nhiu

ng a ch:a. A0.. A10 b. A0.. A11 c. A0.. A12 d. A0.. A13

213. Nu dng mt thit b ngoi vi c dung lng l2 KB th cn phi truy xut bao nhiung a ch:

a. A0.. A10 b. A0.. A11 c. A0.. A12 d. A0.. A13214. Nu dng mt thit b ngoi vi c dung lng l16 KB th cn phi truy xut bao nhiu

ng a ch:a. A0.. A10 b. A0.. A11 c. A0.. A12 d. A0.. A13

215. Cng dng ca con tr lnh l:a. Cha a ch u ca on ngn xp.

b. Gi a ch ca lnh k tip s c thc hin.c. Tr vo 1 a ch trong b nh.d. Cha d liu.

216. Kiu nh a ch ca chip 8051, trong cc ton hng u l thanh ghi Rn c gil:

a. a ch tc thi b. a ch thanh ghic. a ch trc tip b nh d. a ch tng i

217. Lnh sau MOV@DPTR, A s dng mode a ch:a. a ch gin tip b nh b. a ch thanh ghic. a ch tng i d. a ch tc thi

218. Lnh assembly ca 8051 INC A s cng thm 1 vo:a. Thanh ghi tch lu A b. Thanh ghi tch lu Bc. Thanh ghi DPTR c. Thanh ghi IP

219. Lnh assembly ca 8051 MOV A, B s:a. Np gi tr 0AH vo thanh ghi B

b. Np gi tr 0BH vo thanh ghi Ac. Sao chp ni dung ca thanh ghi A vo thanh ghi Bd. Sao chp ni dung ca thanh ghi B vo thanh ghi A

220. Lnh assembly ca 8051 dng copy ni dung ca nh c a ch 85H vo thanh ghia.

a. MOV A, #85H b. MOV #85H, Ac. MOV A, 85H d. MOV 85H, A

221. Lnh assembly ca 8051 MOV DPTR, #1000H s:


15/64

a. Np gi tr 00H vo thanh ghi DPH v 10H vo thanh ghi DPLb. Np gi tr 10H vo thanh ghi DPH v 00H vo thanh ghi DPLc. Sao chp ni dung ca thanh ghi DPTR vo nh c a ch 1000Hd. Sao chp ni dung ca nh c a ch 1000H vo thanh ghi DPTR

222. Lnh c b nh d liu ngoi: a. MOVX A, @DPTRc. MOV A, DPTR

223. Lnh ghi ra b nh d liu ngoi:a. MOVX A, @DPTRc. MOV A, DPTR

MOVX @DPTR, AMOV @DPTR, A

MOVX @DPTR, AMOV @DPTR, A

224. Cc ng tn hiu dng xc nh v tr ca mt nh:a. RD, WR b. Vcc, GND c. D0..D7 d. A0..A15


225. Cc ng tnh hiu sau ca chip 8051 l loi multiplex:a. P2.[0..7] b. P1.[0..7] c. P0.[0..7] d. C hai cu a v c u ng

226. t bit 67H (lm cho bit 67H nhn gi tr 1) ta dng lnh:a. SETB 67H

b. MOV A, 2CHORL A, # 80HMOV 2CH, Ac. MOV A, #67Hd. C hai cu a v b u ng.

227. B nh RAM trn chip 8051 gm c:a. RAM a chc nng

b. Cc dy thanh ghic. RAM nh a ch bitd. C ba cu a, b, c u ng.

228. Lnh MOV A, #0H lm cho c:a. CY = 1 b. AC = 0 c. F0 = 1 d. OV = 1

229. Cc tn hiu vo ca mch gii m a ch gm c:a. Cc ng ca P0, P1b. Cc ng ca P0, P2c. Cc ng ca P3d. C ba cu a, b, c u ng

230. Trong mode a ch tc thi c ton hng l gi tr d liu nm :a. Ton hng th nht b. Ton hng th haic. M lnh d. C ba cu a, b, c u ng

231. Chng trnh con l:

a. on chng trnh thc hin 1 cng vic v kt thc bng lnh RETb. on chng trnh thc hin 1 cng vic v kt thc bng lnh ENDc. C th c gi nhiu ni trong chng trnh chnhd. C hai cu a v c u ng.

232. Cc c c dng ch th tnh trn ca Timer l:a. C trn OF b. C chiu IF c. C trn CF d. C TFO, TF1

233. Lnh MOV A, B dng:a. Mode a ch thanh ghi b. Mode a ch tc thi


16/64

c. Mode a ch trc tip d. Mode a ch gin tip234. Mch gii m a ch l:

a. Mch tnh a ch vt l 20 bitb. Mch m ho d liu BCD ra led 7 onc. Mch to xung chn chip (CS), xc nh vng a ch b nh hay ngoi vi trong h vi

x ld. C ba cu a, b, c u ng.

235. Vi iu khin 8051 c cc port xut nhp sau:a. P0, P1, P2, P3

b. AD0 .. AD7c. PSENd. ALE

236. Cho on m Assembler sau:MOV A, #55HSUBB A, #56H (SUBB l lnh tr )

Kt qu ca thanh ghi A l:a. 00H b. FEH c. FFH d. Khng xc nh


237. Cho on m Assembler sau:MOV A, #55H

LOOP: DEC AJZ LOOP (nhy nu =0)

ENDKt qu ca thanh ghi A l:a. 55H b. 56H c. 54H d. 0H


LOOP: DEC A dec= bt 1JNZ LOOP jnz = nhy nu khc 0END

Kt qu ca thanh ghi A l:a. 25H b. 26H c. 24H d. 0H

239. Cho on m Assembler sau:MOV A, #77HMOV B, #07HDIV AB div l lnh chia ,kt qu lu vo A, dlu vo B


240. Cho on m Assembler sau:MOV A, #77HMOV B, #07HDIV AB

Kt qu ca thanh ghi B l:a. 11H b. 12H c. 7H d. 0H241. Cho on m Assembler sau:

MOV A, #0F0HMOV B, #0E2HORL A, B ORL lnh or hai ton hng

Kt qu ca thanh ghi A l:a. E2H b. F2H c. FFH d.F0H


17/64

242. Cho on m Assembler sau:MOV A, #0F0HMOV B, #0E2HORL A,B

Kt qu ca thanh ghi B l:a. E2H b. F2H c. FFH d.F0H

243. Cho on m Assembler sau:MOV A, #30HMOV R1, #0F0HMOV @R1, AMOV A, @R1

Kt qu ca thanh ghi A l:a. 60H b. 06H c. F0H d. 30H

cng n thi mn Vi x l h Cao ng & i hc.17

244. Cho on m Assembler sau:MOV A, #30HMOV R1, #0F0HMOV @R1, AMOV A, @R1

Kt qu ca thanh ghi R1 l:

a. 60H b. 06H c. F0H d. 30H245. Cho on m Assembler sau:

MOV A, #22HMOV B, #10HMUL AB lnh nhn byte thp lu vo A ,byte caolu vo B


246. Cho on m Assembler sau:MOV A, #22HMOV B, #10HMUL AB

Kt qu ca thanh ghi B l:a. 22H b. 10H c. 20H d. 02H

247. Cho on m Assembler sau:MOV A, #0HDEC A

Kt qu ca thanh ghi A l:a. 0H b. 1H c. FFH d. Khng xc nh

248. Cho on m Assembler sau:MOV A, #0FFH

INC AKt qu ca thanh ghi A l:a. 0H b. FEH c. FFH d. Khng xc nh

249. Cho on m Assembler sau:MOV A, #0FFHADD A, #2H

Kt qu ca thanh ghi A l:


18/64

a. 0H b. 1H c. FFH d. Khng xc nh250. Cho on m Assembler sau:

MOV P3, #55HCLR P3.2

Kt qu ca thanh ghi P3 l:a. 55H b. 56H c. 54H d. 51H

251. Cho on m Assembler sau:MOV P1, #0FFHCLR P1.0

Kt qu ca thanh ghi P1 l:a. 0H b. FEH c. FFH d. Khng xc nh

252. Cho on m Assembler sau:MOV P2, #00HCPL P2.1CPL P2.0

Kt qu ca thanh ghi P2 l:a. 5H b. 4H c. 3H d. 1H


253. Cho on m Assembler sau:MOV A, #0F4HMOV B, #0FHADD A,B

Kt qu ca thanh ghi A l:a. 5H b. F4H c. 3H d. FH

254. Cho on m Assembler sau:MOV A, #0F4HMOV B, #0FHADD A,B

Kt qu ca thanh ghi B l:a. 5H b. F4H c. 3H d. FH

255. Cho on m Assembler sau:MOV P2, #0FFHCPL P2.0

Kt qu ca thanh ghi P2 l:a. 0H b. FEH c. FFH d. Khng xc nh

256. Cho on m Assembler sau:CLR CMOV A, #0FFHMOV B, #05HSUBB A,B

Kt qu ca thanh ghi A l:a. 4H b. FEH c. FAH d. Khng xc nh

257. Cho on m Assembler sau:CLR CMOV A, #0FFHMOV B, #05HSUBB A,B

Kt qu ca thanh ghi B l:a. 4H b. FEH c. FAH d. 5H

258. Cho on m Assembler sau:MOV R1, #0F0H


19/64

MOV @R1, #0FHMOV A, #0F0HADD A, @R1

Kt qu ca thanh ghi A l:a. 0H b. FEH c. FFH d. F0H

259. Cho on m Assembler sau:MOV R1, #0F0HMOV @R1, #0FHMOV A, #0F0HADD A, @R1

Kt qu ca thanh ghi R1 l:a. 0H b. FEH c. FFH d. F0H


260. Cho on m Assembler sau:MOV A, #0C3HMOV R0, #0AAHADD A, R0

Kt qu ca thanh ghi A l:a. C3H b. AAH c. 6DH d. 6BH


Kt qu ca thanh ghi R0 l:a. C3H b. AAH c. 6DH d. 6BH


Kt qu ca c l:a. CY = 0, AC = 0 b. CY = 0, AC = 1c. CY = 1, AC = 0 c. CY = 1, AC = 1


Kt qu ca c l:a. AC = 0, OV = 0 b. AC = 0, OV = 1

c. AC = 1, OV = 0 d. AC = 1, OV = 1264. Cho on m Assembler sau:MOV A, #93HMOV R0, #77HADD A, R0ADDC A, R0

Kt qu ca thanh ghi A l:a. 93H b. 77H c. 82H d. 0AH


20/64

265. Cho on m Assembler sau:MOV A, #93HMOV R0, #77HADD A, R0ADDC A, R0

Kt qu ca thanh ghi R0 l:a. 93H b. 77H c. 82H d. 0AH

266. Cho on m Assembler sau:MOV A, #0C3HMOV R0, #55HANL A, R0

Kt qu ca thanh ghi A l:a. C3H b. 55H c. 41H d. D7H


267. Cho on m Assembler sau:MOV A, #0C3HMOV R0, #55HANL A, R0

Kt qu ca thanh ghi R0 l:a. C3H b. 55H c. 41H d. D7H

268. Cho on m Assembler sau:MOV A, #0F0HANL A, #0FH

Kt qu ca thanh ghi A l:a. F0H b. 0FH c. 00H d. FFH

269. Cho on m Assembler sau:MOV A, #0F0HORL A, #0FH


270. Cho on m Assembler sau:MOV A, #0FFHMOV R0, #0F0HXRL A, R0


271. Cho on m Assembler sau:MOV A, #0FFHMOV R0, #0F0HXRL A, R0

Kt qu ca thanh ghi R0 l:a. F0H b. 0FH c. 00H d. FFH

272. Cho on m Assembler sau:MOV R0, #7FHMOV 7EH, #00HMOV 7FH, #40HDEC @R0


21/64

DEC R0DEC @R0

Kt qu ca thanh ghi R0 l:a. 7FH b. 7EH c. FFH d. 3FH

273. Cho on m Assembler sau:MOV R0, #7FHMOV 7EH, #00HMOV 7FH, #40HDEC @R0DEC R0DEC @R0

Kt qu ca nh c a ch 7EH v 7FH l:a. ( 7EH ) = 00H, ( 7FH ) = 40Hb. ( 7EH ) = FFH, ( 7FH ) = 3FHc. ( 7EH ) = 3FH, ( 7FH ) = FFHd. ( 7EH ) = 40H, ( 7FH ) = 00H


274. Cho on m Assembler sau:SETB CMOV A, #0C9HMOV R2, #54H

SUBB A, R2Kt qu ca thanh ghi A l:a. C9H b. 54H c. 74H d. 75H

275. Cho on m Assembler sau:SETB CMOV A, #0C9HMOV R2, #54HSUBB A, R2

Kt qu ca thanh ghi R2 l:a. C9H b. 54H c. 74H d. 75H

276. Cho on m Assembler sau:MOV A, #0C5HSWAP AADD A, #32H

Kt qu ca thanh ghi A l:a. C5H b. 32H c. E8H d. 8EH

277. Cho on m Assembler sau:MOV R0, #20HMOV A, #3FHMOV 20H, #75HXCH A, @R0

Kt qu ca thanh ghi A l:a. 20H b. 3FH c. 75H d. 57H

278. Cho on m Assembler sau:MOV R0, #20HMOV A, #36HMOV 20H, #75HXCHD A, @R0



22/64

a. 76H b. 35H c. 36H d. 75H279. Khi lp trnh cho ROM bn trong chip 8051, ngun in Vpp cung cp l:

a. Vpp = 5V b. Vpp = 12,5V c. Vpp = 21V d. Vpp = 0V280. vng nh ca ngn xp (stack) c a ch bt u l 40H th thanh ghi SP phi c gi

tr l:a. 39H b. 3FH c. 40H d. 41H

281. Cho on m Assembler sau:MOV A, #0C3HMOV 20H, #77HADD A, 20HADDC A, 20H

Kt qu ca thanh ghi A l:a. C3H b. 77H c. 20H d. B2H


282. Cho on m Assembler sau:MOV A, #0C3HMOV 20H, #77HADD A, 20H

ADDC A, 20HKt qu ca nh c a ch 20H l:a. C3H b. 77H c. 20H d. B2H

283. Cho on m Assembler sau:MOV A, #0ABHCLR CADDC A, #0BAH

Kt qu ca thanh ghi A l:a. ABH b. BAH c. 65H d. 66H

284. Cho on m Assembler sau:MOV A, #7FHMOV R0, #26HMOV 26H, #0AAHADD A, 26HADDC A, @R0

Kt qu ca thanh ghi A l:a. D4H b. D3H c. 7FH d. 26H

285. Cho on m Assembler sau:MOV A, #7FHMOV R0, #26HMOV 26H, #0AAHADD A, 26HADDC A, @R0

Kt qu ca thanh ghi R0 l:a. D4H b. D3H c. 7FH d. 26H

286. Cho on m Assembler sau:MOV A, #7FHMOV R0, #26HMOV 26H, #0AAH


23/64

ADD A, 26HADDC A, @R0

Kt qu ca nh c a ch 26H l:a. 7FH b. D3H c. AAH d. 26H

287. Cho on m Assembler sau:SETB CMOV A, #56HMOV 66H, #76HMOV R0, #66HSUBB A, @R0

Kt qu ca thanh ghi A l:a. 66H b. E0H c. 56H d. DFH


288. Cho on m Assembler sau:SETB CMOV A, #56HMOV 66H, #76HMOV R0, #66HSUBB A, @R0


a. 66H b. E0H c. 56H d. DFH289. Cho on m Assembler sau:

SETB CMOV A, #56HMOV 66H, #76HMOV R0, #66HSUBB A, @R0

Kt qu ca nh c a ch 66H l:a. 56H b. 66H c. 76H d. DFH

290. Cho on m Assembler sau:MOV R0, #7EHMOV 7EH, #00HMOV 7FH, #40HINC @R0INC R0INC @R0

Kt qu ca thanh ghi R0 l:a. 7FH b. 01H c. 41H d. 80H

291. Cho on m Assembler sau:MOV R0, #7EHMOV 7EH, #00H

MOV 7FH, #40HINC @R0INC R0INC @R0

Kt qu ca nh c a ch 7EH l:a. 00H b. 01H c. 02H d. 03H

292. Cho on m Assembler sau:


24/64

MOV R0, #7EHMOV 7EH, #00HMOV 7FH, #40HINC @R0INC R0INC @R0

Kt qu ca nh c a ch 7FH l:a. 43H b. 42H c. 41H d. 40H



Kt qu ca thanh ghi R0 l:a. 7FH b. 7EH c. FFH d. 3FH


Kt qu ca nh c a ch 7EH l:a. 7FH b. 7EH c. FFH d. 3FH


MOV R0, #7FHMOV 7EH, #00HMOV 7FH, #40HDEC @R0DEC R0DEC @R0

Kt qu ca nh c a ch 7FH l:a. 7FH b. 7EH c. FFH d. 3FH

296. Cho on m Assembler sau:MOV R0, #7EHMOV 7EH, #55H

MOV 7FH, #4FHINC R0MOV A, 7EHORL A, @R0MOV R0, AORL A, 7EH

Kt qu ca nh c a ch 7EH l:


25/64

a. 5FH b. 55H c. 4FH d. 7EH297. Cho on m Assembler sau:

MOV R0, #7EHMOV 7EH, #55HMOV 7FH, #4FHINC R0MOV A, 7EHORL A, @R0MOV R0, AORL A, 7EH

Kt qu ca nh c a ch 7FH l:a. 5FH b. 55H c. 4FH d. 7EH


298. Cho on m Assembler sau:MOV R0, #7EHMOV 7EH, #55HMOV 7FH, #4FHINC R0MOV A, 7EHORL A, @R0MOV R0, A

ORL A, 7EHKt qu ca thanh ghi R0 l:a. 5FH b. 55H c. 4FH d. 7EH

299. Cho on m Assembler sau:MOV R0, #7EHMOV 7EH, #55HMOV 7FH, #4FHINC R0MOV A, 7EHORL A, @R0MOV R0, AORL A, 7EH

Kt qu ca thanh ghi A l:a. 5FH b. 55H c. 4FH d. 7EH

300. Cho on m Assembler sau:MOV R0, #7FHMOV 7EH, #0ADHMOV 7FH, #26HDEC R0MOV A, 7FHXRL A, @R0MOV R0, AXRL A, 7FH

Kt qu ca thanh ghi R0 l:a. 26H b. ADH c. 8BH d. 00H

301. Cho on m Assembler sau:MOV R0, #7FHMOV 7EH, #0ADHMOV 7FH, #26H


26/64

DEC R0MOV A, 7FHXRL A, @R0MOV R0, AXRL A, 7FH

Kt qu ca thanh ghi A l:a. 26H b. ADH c. 8BH d. 00H



Kt qu ca nh c a ch 7EH l:a. 26H b. ADH c. 8BH d. 00H


Kt qu ca nh c a ch 7FH l:a. 26H b. ADH c. 8BH d. 00H

304. Cho on m Assembler sau:MOV R0, #7EHMOV 7EH, #55HMOV 7FH, #4FHINC R0MOV A, 7EHANL A, @R0MOV R0, AANL A, 7EH

Kt qu ca nh c a ch 7EH l:

a. 45H b. 55H c. 4FH d. 7EH305. Cho on m Assembler sau:MOV R0, #7EHMOV 7EH, #55HMOV 7FH, #4FHINC R0MOV A, 7EH


27/64

ANL A, @R0MOV R0, AANL A, 7EH

Kt qu ca nh c a ch 7FH l:a. 45H b. 55H c. 4FH d. 7EH


306. Cho on m Assembler sau:MOV R0, #7EHMOV 7EH, #55HMOV 7FH, #4FHINC R0MOV A, 7EHANL A, @R0MOV R0, A

ANL A, 7EHKt qu ca thanh ghi R0 l:a. 45H b. 55H c. 4FH d. 7EH

307. Cho on m Assembler sau:MOV R0, #7EHMOV 7EH, #55HMOV 7FH, #4FHINC R0MOV A, 7EHANL A, @R0MOV R0, AANL A, 7EH

Kt qu ca thanh ghi A l:a. 45H b. 55H c. 4FH d. 7EH

308. Cho on m Assembler sau:MOV A, #0F0HXRL A, #0FH

Kt qu ca thanh ghi A l:a. F0H b. FFH c. 0FH d. 00H

309. Cho on m Assembler sau:MOV A, #5AH

MOV 5AH, AANL 5AH, #0BDHCPL AANL 5AH, A

Kt qu ca thanh ghi A l:a. 5AH b. A5H c. 00H d. BDH

310. Cho on m Assembler sau:MOV A, #5AHMOV 5AH, AANL 5AH, #0BDHCPL A

ANL 5AH, AKt qu ca nh c a ch 5AH l:a. 5AH b. A5H c. 00H d. BDH


28/64


311. Cho on m Assembler sau:MOV A, #5AHMOV 5AH, AORL 5AH, #22H

CPL AORL 5AH, AKt qu ca thanh ghi A l:a. 00H b. FFH c. 5AH d. A5H

312. Cho on m Assembler sau:MOV A, #5AHMOV 5AH, AORL 5AH, #22HCPL AORL 5AH, A

Kt qu ca nh c a ch 5AH l:

a. 00H b. FFH c. A5H d. 5AH313. Cho on m Assembler sau:

MOV A, #5AHMOV 5AH, AXRL 5AH, #0DBHCPL AXRL 5AH, A

Kt qu ca thanh ghi A l:a. 5AH b. A5H c. 42H d. 24H

314. Cho on m Assembler sau:MOV A, #5AHMOV 5AH, AXRL 5AH, #0DBHCPL AXRL 5AH, A

Kt qu ca nh c a ch 5AH l:a. 5AH b. A5H c. 42H d. 24H

315. Cho on m Assembler sau:MOV A, #0C5HRL A


a. 8AH b. 8BH c. 62H d. E2H316. Cho on m Assembler sau:MOV A, #0C5HRR A

Kt qu ca thanh ghi A l:a. 8AH b. 8BH c. 62H d. E2H

317. Cho on m Assembler sau:MOV A, #0B6HRL A

Kt qu ca thanh ghi A l:a. 5BH b. 5CH c. 6DH d. 6CH




29/64

MOV A, #0B6HRR A

Kt qu ca thanh ghi A l:a. 5BH b. 5CH c. 6DH d. 6CH

319. Cho on m Assembler sau:MOV A, #52HADD A, #7BHRLC A

Kt qu ca thanh ghi A l:a. 66H b. E6H c. 9AH d. 9BH

320. Cho on m Assembler sau:MOV A, #52HADD A, #7BHRRC A

Kt qu ca thanh ghi A l:a. 66H b. E6H c. 9AH d. 9BH


MOV A, #0A3HADD A, #0E6HRLC A

Kt qu ca thanh ghi A l:a. 12H b. 13H c. 24H d. C4H

322. Cho on m Assembler sau:MOV A, #0A3HADD A, #0E6HRRC A

Kt qu ca thanh ghi A l:a. 12H b. 13H c. 24H d. C4H

323. Cho on m Assembler sau:MOV A, #0C5HSWAP A

Kt qu ca thanh ghi A l:a. 50H b. 5CH c. 00H d. 0CH

324. Cho on m Assembler sau:MOV P1, #0ABHMOV C, P1.0ANL C, P1.6MOV P1.5, C

Kt qu ca thanh ghi P1 l:

a. 2BH b. 4BH c. 8BH d. ABH325. Cho on m Assembler sau:

MOV P2, #5DHMOV C, P2.2ORL C, P2.4MOV P2.7, C

Kt qu ca thanh ghi P2 l:


326. Cho on m Assembler sau:MOV P1, #0ABHMOV C, P1.0ANL C, /P1.6MOV P1.4, C

Kt qu ca thanh ghi P1 l:a. ABH b. BBH c. CBH d. DBH


30/64

327. Cho on m Assembler sau:MOV P2, #5DHMOV C, P2.1ORL C, /P2.3MOV P2.0, C

Kt qu ca thanh ghi P2 l:a. 5AH b. 5BH c. 5CH d. 5DH

328. Cho on m Assembler sau:MOV P3, #5BHCPL P3.1CPL P3.2

Kt qu ca thanh ghi P3 l:a. 5AH b. 5BH c. 5CH d. 5DH

329. Cho on m Assembler sau:MOV P3, #5BHCLR P3.6CPL P3.1

CPL P3.0Kt qu ca thanh ghi P3 l:a. 18H b. 81H c. 5BH d. B5H

330. Cho on m Assembler sau:MOV R0, #00H

WAIT: DJNZ R0, WAITMOV A, R0

Kt qu ca thanh ghi A l:a. 01H b. FFH c. 00H d. Khng xc nh


DJNZ R0, WAITWAIT: MOV A, R0Kt qu ca thanh ghi A l:a. 01H b. FFH c. 00H d. Khng xc nh


WAIT: DJNZ R0, WAITMOV A, R0

Kt qu ca thanh ghi A l:a. 01H b. FFH c. 00H d. Khng xc nh


333. Cho on m Assembler sau:MOV A, #2FHMOV R0, #0F2HADD A, R0CJNE A, #00H, DUNGMOV A, #0FFH

DUNG: MOV R0, #2FHKt qu ca thanh ghi A v R0 l:a. A = 21H, R0 = 2FH b. A = 2FH, R0 = F2Hc. A = FFH, R0 = F2H d. A = FFH, R0 = 2FH

334. Cho on m Assembler sau:MOV A, #0FHMOV R0, #0F1H


31/64

ADD A, R0CJNE A, #00H, DUNGMOV A, #0FFH

DUNG: MOV R0, #2FHKt qu ca thanh ghi A v R0 l:a. A = 21H, R0 = 2FH b. A = 2FH, R0 = F2Hc. A = FFH, R0 = F2H d. A = FFH, R0 = 2FH

335. Cho on m Assembler sau:MOV A, #2BHMOV R0, #07H

WAIT: INC ADJNZ RO, WAIT


336. Cho on m Assembler sau:MOV A, #0ABHMOV 20H, #03H

ADD A, 20HCJNE A, 20H, DUNGMOV A, #00H

DUNG: MOV 20H, #0ABHKt qu ca thanh ghi A v 20H l:a. A = AEH, 20H = 03H b. A = 00H, 20H = ABHc. A = 00H, 20H = 03H d. A = AEH, 20H = ABH

337. Cho on m Assembler sau:MOV A, #0ABHMOV 20H, #03HADD A, #58H

CJNE A, 20H, DUNGMOV A, #00HDUNG: MOV 20H, #0ABHKt qu ca thanh ghi A v 20H l:a. A = 00H, 20H = 58H b. A = 03H, 20H = 58Hc. A = 00H, 20H = ABH d. A = 03H, 20H = ABH

338. Xung tn hiu ALE c tn s bng . tn s dao ng bn trong chip vi iu khin:a. 1/6 b. 1/2 c. 1/12 d. 1


339. Khi thi hnh b nh t b nh m rng chn EA cn c mc:a. Mc cao (+5V) b. Mc thp (0V)c. B trng d. C 3 cu u sai

340. Trong cc lnh sau lnh no tng ng:(1) MOV A, #00010010B

(2) MOV A, #12H(3) MOV A,#18a. (1) & (2) b. (2) & (3)c. (1) & (3) d. (1) & (2) & (3)

341. Cho on m Assembler sau:MOV 30H, #2EHMOV R1, #2FHINC R1


32/64

MOV A,@R1MOV R1, #40H

Kt qu thanh ghi R1 l:a. 2FH b. 40H c. 2EH d. 30H

342. Cho on m Assembler sau:MOV 30H, #2EHMOV R1, #2FHINC R1MOV A,@R1MOV R1, #40H

Kt qu ca thanh ghi A l:a. 2FH b. 40H c. 2EH d. 30H

343. Cho on m Assembler sau:MOV 30H, #0EHMOV A,#15HMOV A, 30H

Kt qu thanh ghi A:

a. 15H b. 30H c. 0EH d. Khng xc nh.344. Cho on m Assembler sau:MOV 4BH, #56HMOV R0, #4AHMOV A, #14HINC AMOV @R0, AINC R0MOV A,@R0

Kt qu thanh ghi A:a.4AH b.14H c. 56H d. 15H


345. Cho on m Assembler sau:MOV 4BH, #56HMOV R0, #4AHMOV A, #14HINC A

MOV @R0, AINC R0MOV A,@R0

Kt qu thanh ghi R0:a.4AH b.4BH c. 56H d. 14H

346. Cho on m Assembler sau:MOV 4BH, #56HMOV R0, #4AH


33/64

MOV A, #14HINC AMOV @R0, AINC R0MOV A,@R0

Kt qu thanh ghi 4AH:a.4AH b.4BH c. 56H d. 15H

347. Cho on m Assembler sau:MOV 4BH, #56HMOV R0, #4AHMOV A, #14HINC AMOV @R0, AINC R0MOV A,@R0

Kt qu thanh ghi 4BH:a.4AH b.4BH c. 56H d. 14H

348. Cho on m Assembler sau:MOV R0, #52HMOV A, #17HMOV 53H, AINC AMOV @R0, AINC R0MOV A,@R0

Kt qu thanh ghi A:a.53H b.52H c. 17H d. 18H


MOV R0, #52HMOV A, #17HMOV 53H, AINC AMOV @R0, AINC R0MOV A,@R0

Kt qu thanh ghi R0:a.53H b.52H c. 17H d. 18H


350. Cho on m Assembler sau:MOV R0, #52HMOV A, #17HMOV 53H, AINC A

MOV @R0, AINC R0MOV A,@R0

Kt qu thanh ghi 52H:a.53H b.52H c. 17H d. 18H

351. Cho on m Assembler sau:MOV R0, #52HMOV A, #17H


34/64

MOV 53H, AINC AMOV @R0, AINC R0MOV A,@R0

Kt qu thanh ghi 53H:a.53H b.52H c. 17H d. 18H

352. Cho on m Assembler sau:MOV R0, #52HMOV A, #17HINC AMOV R0, AINC R0MOV A,R0

Kt qu thanh ghi A:a.53H b.52H c. 19H d. 18H


MOV R0, #52HMOV A, #17HINC AMOV R0, AINC R0MOV A,R0

Kt qu thanh ghi R0:a.53H b.52H c. 19H d. 18H

354. khi ng con tr ngn xp (SP) bt u ti a ch 49H ta dng lnh:a. MOV SP, #50H

b. MOV SP, #49H

c. MOV SP, #48Hd. MOV SP, #4AH355. Cho on m Assembler sau:

MOV A, #76HMOV DPTR, #1050HMOVX @DPTR,A

Kt qu:a. nh a ch 1050H cha 76H b. Thanh ghi DPH cha 10Hc. Thanh ghi DPL cha 50H d. Tt c cc cu u ng.


356. Cho on m Assembler sau:MOV A, #38HADD A, #24HDA A

Kt qu thanh ghi A v c kim tra chn (P) l:

a. 62H, 1 b. 62H, 0 c. 5CH, 0 d. 5CH, 1357. Cho on m Assembler sau:MOV A, #49HADD A, #02H

Kt qu thanh ghi A v c kim tra chn (P) l: Lnh tr

a. 4BH, 1 b. 51H, 0 c. 4BH, 0 d. 51H, 1358. Cho on m Assembler sau:


35/64

MOV A, #08HMOV B, #02HMUL AB

Kt qu thanh ghi A:a. 08H b. 00H c. 10H d. 16H

359. Cho on m Assembler sau:MOV A, #08HMOV B, #02HMUL AB

Kt qu thanh ghi B:a. 08H b. 00H c. 10H d. 16H

360. Cho on m Assembler sau:MOV A, #11MOV B, #3DIV AB

Kt qu thanh ghi A:a. 0BH b. 03H c. 02H d. 00H

361. Cho on m Assembler sau:MOV A, #11MOV B, #3DIV AB

Kt qu thanh ghi B:a. 0BH b. 03H c. 02H d. 00H

362. Cho on m Assembler sau:MOV A, #34MOV R0, #2SETB CADDC A, R0

Kt qu ca thanh ghi A l:a.34 b. 36 c. 37 d. 68363. Cho on m Assembler sau:

MOV A, #34MOV R0, #2SUBB A, R0

Kt qu ca thanh ghi A l:a. 31 b. 32 c. 34 d. Khng xc nh.


364. Cho on m Assembler sau:MOV A, #34ADD A,#0MOV R0, #2

SUBB A, R0Kt qu ca thanh ghi A l:a. 31 b. 32 c. 34 d. Khng xc nh.

365. Cho on m Assembler sau:MOV A, #1MOV R0, #2ADD A, #255MOV A,#34


36/64

SUBB A, R0Kt qu ca thanh ghi A l:a. 31 b. 32 c. 34 d. Khng xc nh.

366. Cho on m Assembler sau:MOV A, #34HCPL ARL A

Kt qu ca thanh ghi A l:a. 34H b. CBH c. 96H d. 97H

367. Cho on m Assembler sau:MOV A, #37HSWAP ARR A

Kt qu ca thanh ghi A l:a. 0B9H b. 73H c. 0E6H d. 39H


SWAP ARL AKt qu ca thanh ghi A l:a. 0B9H b. 73H c. 0E6H d. 39H

369. Cho on m Assembler sau:MOV A, #15HSWAP AXRL A, #0FFH

Kt qu ca thanh ghi A l:a. 0AEH b. 51H c. 0FFH d. 15H


MOV A, #56HCPL AANL A, #0FFH

Kt qu ca thanh ghi A l:a. 56H b. 0A9H c. 0FFH d. 65H


371. Cho on m Assembler sau:MOV A, #34HMOV 78H, #56HXCH A, 78H


372. Cho on m Assembler sau:MOV A, #34HMOV 78H, #56HXCH A, 78H

Kt qu ca nh c a ch 78H l:a. 78H b. 45H c. 34H d. 56H373. Cho on m Assembler sau:

MOV A, #34HMOV 78H, #56HMOV R0, #78HXCHD A, @R0


37/64


374. Cho on m Assembler sau:MOV A, #34HMOV 78H, #56HMOV R0, #78HXCHD A, @R0

Kt qu ca nh c a ch 78H l:a. 36H b. 54H c. 78H d. 35H

375. Cho on m Assembler sau:MOV A, #34HSETB ACC.7CLR ACC.2CPL ACC.0

Kt qu ca thanh ghi A l:a. 0B1H b. 0B0H c. 31H d. 30H


MOV A, #0FFHSETB ACC.7CLR ACC.2CPL ACC.0

Kt qu ca thanh ghi A l:a. 0FFH b. 7FH c. 0F7H d. 0FAH


LOOP: MOV @R1, #0INC R1CJNE R1, #40H, LOOP

a. Kt qu nh c a ch 20H c gi tr bng 0b. Kt qu nh c a ch 40H c gi tr bng 0c. Kt qu nh c a ch t 20H3FH c gi tr bng 0d. Kt qu nh c a ch 20H 40H c gi tr bng 0


378. Trong cc lnh sau ch ra lnh khng hp l:a. INC A b. DEC A c. INC DPTR d. DEC DPTR

379. Cho on m Assembler sau:MOV R1, #3MOV A, #15

LOOP: ADD A, #2DJNZ R1, LOOP

Kt qu thanh ghi A:a. 21 b. 15 c. 19 d. 3

380. Cho on m Assembler sau:MOV 35H, #6DHMOV R1, #35HMOV A, #0EFHANL A, @R1

Kt qu ca thanh ghi A l:a. 32H b. 20H c. 6DH d. 35H



38/64

CLR PMOV P1, #18HMOV C, PMOV P1.0, CCPL P1.7

Kt qu thanh ghi P1 l:a. 99H b. 19H c. 98H d. 18H

382. Khi thc hin lnh CJNE A, #40H, rel th c nh C = 0 nu:a. Gi tr thanh ghi A ln hn 40H

b. Gi tr thanh ghi A bng 40Hc. Gi tr thanh ghi A nh hn 40Hd. Gi tr thanh ghi A ln hn hoc bng 40H

383. Khi thc hin lnh CJNE A, #40H, rel th c nh C = 1 nu:a. Gi tr thanh ghi A ln hn 40H

b. Gi tr thanh ghi A bng 40Hc. Gi tr thanh ghi A nh hn 40Hd. Gi tr thanh ghi A ln hn hoc bng 40H

384.

Khi thc hin lnh CJNE A, 40H, rel th c nh C = 0 nu:a. Gi tr nh 40H nh hn gi tr thanh ghi Ab. Gi tr nh 40H bng gi tr thanh ghi Ac. Gi tr nh 40H ln hn gi tr thanh ghi Ad. Gi tr nh 40H nh hn hoc bng gi tr thanh ghi A

385. Khi thc hin lnh CJNE A, 40H, rel th c nh C = 1 nu:a. Gi tr nh 40H nh hn gi tr thanh ghi A

b. Gi tr nh 40H bng gi tr thanh ghi Ac. Gi tr nh 40H ln hn gi tr thanh ghi Ad. Gi tr nh 40H nh hn hoc bng gi tr thanh ghi A


386. Cho on m Assembler sau:MOV R1, #3MOV A, #17SETB C

LOOP: SUBB A, #2DJNZ R1, LOOP

Kt qu ca thanh ghi A l:a. 10 b. 11 c. 12 d. 17

387. Cho on m Assembler sau:MOV R1, #3MOV A, #17

LOOP: SETB CSUBB A, #2DJNZ R1, LOOP


a. 10 b. 11 c. 17 d. 8388. Cho on m Assembler sau:MOV A, #15HJB P, SKIPMOV A, #0FFHSJMP EXIT

SKIP: CLR A


39/64

EXIT: ENDKt qu ca thanh ghi A l:a. 15H b. 0FFH c. 00H d. C 3 u sai

389. Cho on m Assembler sau:MOV A, #18HJB ACC.7, SKIPMOV A, #0FFHSJMP EXIT

SKIP: CLR AEXIT: ENDKt qu ca thanh ghi A l:a. 18H b. 0FFH c. 00H d. C 3 u sai

390. Cho on m Assembler sau:MOV A, #18HMOV 30H, #10HJB ACC.7, SKIPADD A, 30H

MOV 30H, ASJMP EXITSKIP: SUBB A, 30H

MOV 30H,AEXIT: ENDKt qu nh 30H cha:a. 30H b. 18H c. 28H d. 08H


391. Cho on m Assembler sau:MOV A, #0FFHADD A, #1JNZ SKIPADDC A, #02HSJMP EXIT

SKIP: ADDC A, #01HEXIT: ENDKt qu thanh ghi A:a. 0FFH b. 03H c. 02H d. 01H

392. Cho on m Assembler sau:MOV A, #0FFHADD A, #2JZ SKIPADDC A, #02HSJMP EXIT

SKIP: ADDC A, #01HEXIT: ENDKt qu thanh ghi A:a. 0FFH b. 03H c. 04H d. 02H

393. S Timer v s mode hot ng ca 8051/8031 l:a. 1, 3 b. 2, 4 c. 2, 3 d.1, 4394.Ngun xung nhp cho cc Timer l xung vung c tn s bng tn s dao ng thch

anh:a. 1/2 b. 1/12 c. 1/4 d. 1/6

395.Ngi ta s dng Timer :a. nh th khong thi gian b. m s kinc. To tc baud cho cng ni tip d. C 3 u ng


40/64

396. Ch Timer t ng np li l ch :a. 0 b. 1 c. 2 d. 3

397. Ch Timer 16 bit l ch :a. 0 b. 1 c. 2 d. 3

398. Khi lp trnh nh th vi khong thi gian t 256 65536 s (gi s dng thch anh l12MHz) ta dng k thut:

a. iu chnh bng phn mm b. Timer 8 bit t ng np li gi tr uc. Timer 16 bit d. Timer 16 bit kt hp vi cc vng lp

399. Khi lp trnh nh th vi khong thi gian t 10 256s (gi s dng thch anh l12Mhz) ta dng k thut:


400. Khi lp trnh nh th vi khong thi gian nh hn 10s (gi s dng thch anh l12Mhz) ta dng k thut:


401. Khi lp trnh nh th vi khong thi gian ln hn 65536s (gi s dng thch anh l12Mhz) ta dng k thut:a. iu chnh bng phn mm b. Timer 8 bit t ng np li gi tr u

c. Timer 16 bit d. Timer 16 bit kt hp vi cc vng lp


402. C bo trn ca Timer (TF) s c set ln 1 nu s m t:a. 0000H0001H b. 0001H 0002Hc. FFFEH FFFFH d. FFFFH 0000H

403. Bit iu khin chy/dng ca Timer 1 l bit:a. TR1 b. TF1 c. TL1 d. TH1

404. Khi ta chn mode hot ng l mode 1 ta cn thit lp hai bit M1M0 c gi tr:a. 00 b. 01 c. 10 d. 11




408. Khi ta mun s dng Timer 0 mode 2 ta cn khi ng thanh ghi TMOD:a. MOV TMOD, #02H b. MOV TMOD, #12Hc. MOV TMOD, #20H d. MOV TMOD, #10H

409. Khi ta mun s dng Timer 1 mode 1 ta cn khi ng thanh ghi TMOD:a. MOV TMOD, #01H b. MOV TMOD, #02Hc. MOV TMOD, #20H d. MOV TMOD, #10H

410. Khi bit m cng GATE c xa bng 0 th Timer s nhn xung nhp:

a. Bn trong chip b. Bn ngoi chipc. Khng nhn xung nhp d. C 3 u sai411. Khi s dng Timer m s kin, ta cn thit lp bit:

a. C/T = 0 b. C/T = 1 c. TR = 0 d. TR = 1412. Khi s dng Timer nh th, ta cn thit lp bit:

a. C/T = 0 b. C/T = 1 c. TR = 0 d. TR = 1413. Khi s dng Timer v iu khin Timer chy, ta cn thit lp bit:

a. C/T = 0 b. C/T = 1 c. TR = 0 d. TR = 1


41/64

414. Khi s dng Timer v iu khin Timer dng, ta cn thit lp bit:a. C/T = 0 b. C/T = 1 c. TR = 0 d. TR = 1

415. Cho on m Assembler sau:MOV 30H, #02HMOV A, 30HMOV DPTR, #TABLEMOVC A, @A+DPTRMOV P1, A

TABLE:DB 0C0H, 0F9H, 0A4H, 0B0H, 99H, 92H, 82H, 0F8H, 80H, 90H

Kt qu thanh ghi P1 l:a. 02H b. 30H c. 0A4H d.0F9H


416. Cho chng trnh sau:DELAY:

MOV TMOD, #02HMOV TH0, # -50SETB TR0

LOOP:JNB TF0, LOOPCLR TF0CPL P1.0SJMP LOOPEND

Chng trnh ny dng :a. To dng sng vung c chu k 100S trn chn P1.0

b. To dng sng vung c chu k 50S trn chn P1.0c. To dng sng vung c chu k 100mS trn chn P1.0d. To dng sng vung c chu k 50mS trn chn P1.0 417.

Cho chng trnh sau:DELAY:

MOV TMOD, #02HMOV TH0, #0CEHSETB TR0


Chng trnh ny dng :


42/64

a. To dng sng vung c chu k 100S trn chn P1.0b. To dng sng vung c chu k 50S trn chn P1.0c. To dng sng vung c chu k 206S trn chn P1.0d. To dng sng vung c chu k 103S trn chn P1.0


MOV TMOD, #02HMOV TH0, # -100SETB TR0


Chng trnh ny dng :a. To dng sng vung c chu k 100mS trn chn P1.1

b. To dng sng vung c chu k 200mS trn chn P1.1c. To dng sng vung c chu k 200S trn chn P1.1d. To dng sng vung c chu k 100S trn chn P1.1



MOV TMOD, #02HMOV TH0, # 9CHSETB TR0



b. To dng sng vung c chu k 78S trn chn P1.1c. To dng sng vung c chu k 200S trn chn P1.1d. To dng sng vung c chu k 100S trn chn P1.1


MOV TMOD, #01HLOOP:

MOV TH0, # HIGH(-500)MOV TL0, #LOW(-500)SETB TR0JNB TF0, $CLR TR0CLR TF0CPL P1.0SJMP LOOP


43/64

ENDChng trnh ny dng :a. To dng sng vung c chu k 1000mS trn chn P1.0

b. To dng sng vung c chu k 500S trn chn P1.0c. To dng sng vung c chu k 1000S trn chn P1.0d. To dng sng vung c chu k 500mS trn chn P1.0



MOV TMOD, #01HLOOP:

MOV TH0, #3CHMOV TL0, #0B0HSETB TR0JNB TF0, $CLR TR0CLR TF0

CPL P1.1SJMP LOOPEND


b. To dng sng vung c chu k 50mS trn chn P1.1c. To dng sng vung c chu k 100S trn chn P1.1d. To dng sng vung c chu k 100mS trn chn P1.1


MOV TMOD, #01HLOOP:MOV TH0, # 0FEHMOV TL0, #0CHSETB TR0JNB TF0, $CLR TR0CLR TF0


44/64



b. To dng sng vung c chu k 32518S trn chn P1.0c. To dng sng vung c chu k 1000S trn chn P1.0

d. To dng sng vung c chu k 500S trn chn P1.0



MOV TMOD, #01HLOOP:

MOV TH0, #HIGH(-50000)MOV TL0, #LOW(-50000)SETB TR0JNB TF0, $CLR TR0CLR TF0



b. To dng sng vung c chu k 50mS trn chn P1.1c. To dng sng vung c chu k 100S trn chn P1.1d. To dng sng vung c chu k 100mS trn chn P1.1

424. Cho on m lnh sau:CJNE A, #30H, TIEP

TIEP: JNC SKIPTa c th thay th on m lnh trn bng:a. CJNE A, #30H, $

JNC SKIPb. CJNE A, #30H, $+3

JNC SKIPc. CJNE A, #30H, $-3

JNC SKIP


45/64

d. CJNE A, #30H, SKIPTIEP: JNC SKIP

425. Cho m lnh sau:WAIT: JNB TF1, WAITTa c th thay th cu lnh trn bng lnh:a. JNB TF1, $ b. JNB TF1, $+1c. JNB TF1, $+2 d. JNB TF1, $+3

426. Cho on m Assembler sau:MOV 30H, #04HMOV A, 30HMOV DPTR, #TABLEMOVC A, @A+DPTRMOV 50H, A

TABLE:DB 00H, 01H, 04H, 09H, 16H, 25H, 36H, 49H, 64H, 81H Kt

qu nh c a ch 50H l:a. 04H b. 16H c. 09H d.50H


427. Cho on m Assembler sau :ORG 0000HMOV 30H, #0B0HMOV A, 30HEND

Kt qu ca thanh ghi A l:a. 30H b. B0H c. 0BH d. 00H

428. Cho on m Assembler sau :ORG 0000HMOV 30H, #0B0HMOV A, 30HEND

Kt qu ca nh c a ch 30H l:a. 30H b. B0H c. 0BH d. 00H

429. Cho on m Assembler sau :ORG 0000HMOV 30H, #35HMOV 35H, #4BHMOV A, #35HEND

Kt qu ca thanh ghi A l:a. 4BH b. 30H c. 35H d. 23H



46/64

Kt qu ca nh c a ch 30H l:a. 4BH b. 30H c. 35H d. 23H


Kt qu ca nh c a ch 35H l:a. 4BH b. 30H c. 35H d. 23H

432. Cho on m Assembler sau :ORG 0000HMOV 30H, #35HMOV 35H, #4BHMOV A, 35HEND


a. 4BH b. 30H c. 35H d. FFH


433. Cho on m Assembler sau :ORG 0000HMOV 30H, #4CHMOV R1, #30HMOV A, R1END

Kt qu ca thanh ghi A l:a. 30H b. 4CH c. 00H d. 48H

434. Cho on m Assembler sau :ORG 0000HMOV 30H, #4CHMOV R1, #30HMOV A, @R1END

Kt qu ca thanh ghi A l:a. C4H b. 30H c. 48H d. 4CH

435. Cho on m Assembler sau :ORG 0000HMOV 40H, #65MOV 41H, #19

MOV A, 40HENDKt qu ca thanh ghi A l:

a. 65H b. 19H c. 41H d. 40H436. Cho on m Assembler sau :

ORG 0000HMOV 40H, #65MOV 41H, #19


47/64

MOV R1, #40HMOV A, R1END


437. Cho on m Assembler sau :ORG 0000HMOV 40H, #65MOV 41H, #19MOV R1, 40HMOV A, @R1END



438. Cho on m Assembler sau :ORG 0000HMOV 40H, #52MOV 52H, #17MOV R1, #40HMOV A, R1END


439. Cho on m Assembler sau :ORG 0000HMOV 40H, #52MOV 52H, #17MOV R1, #40HMOV A, @R1END


440. Cho on m Assembler sau :ORG 0000H

MOV R0, #30HMOV 31H, #4CHMOV @R0, 31HEND

Kt qu ca nh c a ch 30H l:a. 4CH b. 30H c. 31H d. FFH



48/64

MOV R0, #32HMOV 33H, #4AHMOV @R0, #33HEND

Kt qu ca nh c a ch 32H l:a. 32H b. 4AH c. 33H d. 23H

442. Cho on m Assembler sau :ORG 0000HMOV A, #2EHINC AANL A, #19MOV R0, #31HMOV @R0, AEND

Kt qu ca thanh ghi A l:a. 2EH b. 03H c. 19H d. 31H


443. Cho on m Assembler sau :ORG 0000HMOV A, #2EHINC AANL A, #19MOV R0, #31HMOV @R0, AEND

Kt qu ca nh c a ch 31H l:a. 03H b. 19H c. 2EH d. 31H

444. Cho on m Assembler sau :ORG 0000HMOV R1, #41HMOV 40H, #1EHMOV @R1, 40HMOV A, 41HEND

Kt qu ca thanh ghi A l:a. 40H b. 41H c. 14H d. 1EH

445. Cho on m Assembler sau :

ORG 0000HMOV A, #4BHADD A, #30HEND

Kt qu ca thanh ghi A l:a. 4EH b. FFH c. 7BH d. 1BH



49/64

MOV A, #4BHADD A, #5CHEND

Kt qu ca thanh ghi A l:a. A7H b. 97H c. FFH d. 11H

447. Cho on m Assembler sau :ORG 0000HMOV A,#32HADD A,#23HEND

Kt qu ca thanh ghi A l:a. 00H b. 64H c. 0EH d. 55H

448. Cho on m Assembler sau :ORG 0000HMOV A, #32ADD A, #23END

Kt qu ca thanh ghi A l:a. 55H b. 37H c. 32H d. 09H cng n thi mn Vi x l hCao ng & i hc. 51

455. Cho on m Assembler sau :ORG 0000HCLR CMOV A, #4BHMOV 30H, #23HSUBB A , #30HEND

Kt qu ca thanh ghi A l:a. 1BH b. 53H c. 7BH d. 28H

456. Cho on m Assembler sau :ORG 0000HCLR CMOV A, #4BHMOV 30H, #23HSUBB A, 30HEND


a. 1BH b. 7BH c. 28H d. 53H457. Cho on m Assembler sau :ORG 0000HMOV A, #0C0HCLR CMOV R1, #40HMOV 40H, #15HSUBB A, R1END

Kt qu ca thanh ghi A l:a. F0H b. ABH c. 55H d. 80H

458. Cho on m Assembler sau :ORG 0000HCLR CMOV A , #0C0HMOV R1, #40HMOV 40H, #15HSUBB A,@R1


50/64

ENDKt qu ca thanh ghi A l:a. F0H b. ABH c. 55H d. 80H

459. Cho on m Assembler sau :ORG 0000HMOV A, #0FCHADD A, #09HEND

Kt qu ca thanh ghi A l:a. 05H b. FFH c. 00H d. Khng xc nh.


460. Cho on m Assembler sau :ORG 0000HCLR CMOV A, #4BHSUBB A, #60HEND

Kt qu ca thanh ghi A l:a. 00H b. EBH c. FFH d. Khng xc nh

461. Cho on m Assembler sau :ORG 0000HSETB CMOV A, #30ADDC A, #4END

Kt qu ca thanh ghi A l:a. 23H b. 1EH c. 34H d. 22H

462. Cho on m Assembler sau :ORG 0000HMOV A, #0C0HMOV R1, #0D8HADD A, R1ADDC A, #0C0HEND

Kt qu ca thanh ghi A l:a. C0H b. 98H c. 59H d. FFH


MOV A, #10MOV R1, #48MOV 30H, #20ADD A, 30HEND

Kt qu ca thanh ghi A l:a. 48H b. 0AH c. 30H d. 1EH



51/64

ORG 0000HMOV A, #10MOV R1, #48MOV 30H, #20ADD A, @R1END

Kt qu ca thanh ghi A l:a. 10H b. 68H c. 1EH d. 30H


465. Cho on m Assembler sau :ORG 0000HMOV A, #10HADD A, #20HINC AEND


466. Cho on m Assembler sau :ORG 0000HMOV A, #10HADD A, #20HDEC AEND


467. Cho on m Assembler sau :ORG 0000HMOV A, #40INC AEND


468. Cho on m Assembler sau :ORG 0000HMOV A, #52

DEC AENDKt qu ca thanh ghi A l:a. 52H b. 33H c. 34H d. 51H

469. Cho on m Assembler sau :ORG 0000HMOV R0, #0FFHINC R0


52/64

ENDKt qu thanh ghi R0 l:a. FFH b. FEH c. 00H d. Khng xc nh.

470. Cho on m Assembler sau :ORG 0000HMOV R0, #00HDEC R0END

Kt qu thanh ghi R0 l:a. FFH b. FEH c. 00H d. Khng xc nh.


471. Cho on m Assembler sau :ORG 0000HMOV 30H, #10HMOV 31H, #20HMOV R0, #30HINC R0

MOV A, @R0END


472. Cho on m Assembler sau :ORG 0000HMOV A, #10MOV 30H, #20INC AINC 30HADD A, 30H

ENDKt qu ca thanh ghi A l:a. 10H b. 0BH c. 20H d. 30H

473. Cho on m Assembler sau :ORG 0000HMOV R0, #31HMOV R1, #4BHMOV 30H, #30HDEC R0MOV A, R1ADD A, @R0END

Kt qu ca thanh ghi A l:a. 31H b. 4BH c. 7BH d. 30H

474. Cho on m Assembler sau :ORG 0000HMOV R0, #30HMOV 31H, #4BH


53/64

MOV A, R0INC AMOV R0, AADD A, @R0END

Kt qu ca thanh ghi A l:a. 7CH b. 30H c. 7AH d. 61H

475. Cho on m Assembler sau :ORG 0000HMOV A, #40HMOV B, #0A0HMUL ABEND

Kt qu ca thanh ghi A l:a. 00H b. 28H c. A0H d. 40H


476. Cho on m Assembler sau :ORG 0000HMOV A, #40HMOV B, #0A0HMUL ABEND

Kt qu thanh ghi B l:a. 00H b. 28H c. A0H d. 40H

477. Cho on m Assembler sau :ORG 0000HMOV A, #15MOV B, #40MUL ABEND


478. Cho on m Assembler sau :ORG 0000HMOV A, #15MOV B, #40MUL ABEND


479. Cho on m Assembler sau :ORG 0000HMOV A, #15H

MOV B, #40HMUL ABEND


480. Cho on m Assembler sau :ORG 0000HMOV A, #15H


54/64

MOV B, #40HMUL ABEND


481. Cho on m Assembler sau :ORG 0000HMOV A, #0F0HMOV B, #4BHDIV ABEND

Kt qu ca thanh ghi A l:a. 03H b. 0FH c. 4BH d. FFH


482. Cho on m Assembler sau :ORG 0000HMOV A, #0F0HMOV B, #4BHDIV ABEND

Kt qu thanh ghi B l:a. 03H b. 0FH c. 4BH d. FFH

483. Cho on m Assembler sau :ORG 0000HMOV A, #30MOV B, #7DIV ABEND


484. Cho on m Assembler sau :ORG 0000HMOV A, #30MOV B, #7DIV ABEND

Kt qu thanh ghi B l:a. 20H b. 06H c. 04H d. 02H

485. Cho on m Assembler sau :ORG 0000HMOV 30H, #45H

MOV 31H, 0C0HMOV A, 30HMOV B, #31HMUL ABEND

Kt qu ca thanh ghi A l:a. 35H b. 0DH c. 45H d. 31H



55/64

ORG 0000HMOV 30H, #45HMOV 31H, 0C0HMOV A, 30HMOV B, #31HMUL ABEND

Kt qu thanh ghi B l:a. 35H b. 0DH c. 45H d. 31H


487. Cho on m Assembler sau :ORG 0000HMOV A, #0C3H

CPL AENDKt qu ca thanh ghi A l:a. C3H b. 3CH c. B7H d. 33H

488. Cho on m Assembler sau :ORG 0000HMOV A, #40HANL A, #5BHEND

Kt qu ca thanh ghi A l:a. 40H b. 5BH c. 9BH d. 1BH

489. Cho on m Assembler sau :ORG 0000HMOV A, #40ANL A, #36END


490. Cho on m Assembler sau :ORG 0000HMOV A, #4BHMOV R0, #15HANL A, R0END


491. Cho on m Assembler sau :ORG 0000HMOV 30H, #1CHMOV R1, #30HMOV A, #0DFHANL A, @R1

ENDKt qu ca thanh ghi A l:a. 30H b. 1CH c. DFH d. 4CH

492. Cho on m Assembler sau :ORG 0000HMOV A, #0A7HORL A , #7AHEND


56/64

Kt qu ca thanh ghi A l:a. A7H b. 7AH c. 77H d. FFH


493. Cho on m Assembler sau :ORG 0000HMOV A, #0B3HMOV 30H, #4EH

ORL A, #30HENDKt qu ca thanh ghi A l:

a. BEH b. 3EH c. B3H d. 30H494. Cho on m Assembler sau :

ORG 0000HMOV A, #0B3HMOV 30H, #4EHORL A, #30END


a. BFH b. 3EH c. B3H d. 30H495. Cho on m Assembler sau :

ORG 0000HMOV A, #18HSETB CANL C, ACC.4END

Cho bit gi tr ca c C l:a. 0 b. 1 c. 8 d. Khng xc nh.

496. Cho on m Assembler sau :ORG 0000HMOV A, #15HSETB ACC.7ANL A, #9BHEND

Kt qu ca thanh ghi A l:a. 95H b. 9BH c. 15H d. 91H

497. Cho on m Assembler sau :ORG 0000HMOV A, #17HXRL A, #40HEND


498. Cho on m Assembler sau :ORG 0000HMOV A, #18MOV R1, #48MOV 30H, #3EH


57/64

XRL A, @R1END

Kt qu ca thanh ghi A l:a. 18H b. 48H c. 2CH d. 20H


499. Cho on m Assembler sau :ORG 0000HMOV A, #18MOV R1, #48MOV 30H, #3EHXRL A, R1END


500. Cho on m Assembler sau :ORG 0000HMOV 40H, #0FHMOV 41H, #3BHMOV R1, #40HINC R1MOV A, 40HXRL A, @R1END


501. Cho on m Assembler sau :ORG 0000HMOV A, #4AHADD A, #32HCPL AEND

Kt qu ca thanh ghi A l:a. 4AH b. 32H c. 7CH d. 83H

502. Cho on m Assembler sau :ORG 0000HMOV A, #40HRL AEND


503. Cho on m Assembler sau :ORG 0000HMOV A, #23HRL AEND


a. 46H b. 32H c. 91H d. 64H504. Cho on m Assembler sau :ORG 0000HMOV A, #23HRR AEND



58/64

a. 46H b. 32H c. 91H d. 19H


59/64


505. Cho on m Assembler sau :ORG 0000HMOV A, #45RL AEND

Kt qu ca thanh ghi A l:a. 45H b. 8AH c. 96H d. 5AH

506. Cho on m Assembler sau :ORG 0000HMOV A, #45HRR AEND

Kt qu ca thanh ghi A l:a. 45H b. 8AH c. A2H d. 51H507. Cho on m Assembler sau :

ORG 0000HMOV A, #32HRR AEND



MOV A, #35RR AEND

Kt qu ca thanh ghi A l:a. 23H b. 19H c. 9AH d. 91H

509. Cho on m Assembler sau :ORG 0000HMOV A, #40HSWAP AEND


510. Cho on m Assembler sau :ORG 0000HMOV A, #13HMOV 20H, #4BHXCH A, 20HEND

Kt qu ca thanh ghi A l:a. 13H b. 1BH c. 43H d. 4BH


60/64


511. Cho on m Assembler sau :ORG 0000HMOV A, #13HMOV 20H, #4BHXCH A, 20HEND

Kt qu ca nh c a ch 20H l:a. 13H b. 1BH c. 43H d. 4BH

512. Cho on m Assembler sau :ORG 0000HMOV A, #4EHMOV R1, #20H

XCH A, R1ENDKt qu ca thanh ghi A l:a. 4EH b. 40H c. 20H d. 2EH

513. Cho on m Assembler sau :ORG 0000HMOV A, #4EHMOV R1, #20HXCH A, R1END


a. 4EH b. 40H c. 20H d. 2EH514. Cho on m Assembler sau :

ORG 0000HMOV A, #6BHADD A, #43HRRC AEND

Kt qu ca thanh ghi A l:a. 6BH b. 43H c. 57H d. AEH

515. Cho on m Assembler sau :ORG 0000HMOV A, #0B6HADD A, #0CDHRRC AEND

Kt qu ca thanh ghi A l:a. C1H b. 83H c. 9BH d. 07H

516. Cho on m Assembler sau :ORG 0000HMOV A, #0B6HADD A, #0CDH

RLC AENDKt qu ca thanh ghi A l:a. C1H b. 83H c. 9BH d. 07H


61/64


517. Cho on m Assembler sau :ORG 0000HMOV A, #32HADD A, #40HSWAP AEND


518. Cho on m Assembler sau :ORG 0000HMOV R0, #30HMOV A, #7BH

MOV 30H, #4CHXCHD A, @R0END

Kt qu ca thanh ghi A l:a. 74H b. 73H c. 7BH d. 7CH

519. Cho on m Assembler sau :ORG 0000HMOV R1, #2BHCJNE R1, #2BH, NHANMOV A, #4BHSJMP KETTHUC

NHAN : MOV A, #0B4HKETTHUC: END

Kt qu ca thanh ghi A l:a. 4BH b. B4H c. 2BH d. B2H

520. Cho on m Assembler sau :ORG 0000HMOV R1, #30HCJNE R1, #2BH, NHANMOV A, #30HSJMP KETTHUC

NHAN : MOV A,#40HKETTHUC: END

Kt qu ca thanh ghi A l:a. 40H b. 30H c. 2BH d. 04H

521. Cho on m Assembler sau :ORG 0000HMOV R1, #30HCJNE R1, #30, NHANMOV A, #45HSJMP KETTHUC

NHAN : MOV A, #54H

KETTHUC: ENDKt qu ca thanh ghi A l:a. 54H b. 45H c. 30H d. 35H


62/64



ORG 0000HMOV A, #20JZ NHANMOV 30H, #0C0HSJMP KETTHUC

NHAN : MOV 30H, #4CHKETTHUC: END

Kt qu nh c a ch 30H l:a. 4CH b. C0H c. 20H d. 14H


MOV A, #3BHMOV R0, #0B3HADD A, R0CJNE A, #0EEH, NHANMOV 30H, #23SJMP KETTHUC

NHAN : MOV 30H, #32KETTHUC: END

Kt qu nh c a ch 30H l:a. 23H b. 32H c. 17H d. EEH


ORG 0000HMOV A, #3BHMOV R0, #0B3HADD A, R0CJNE A, #0FFH, NHANMOV 30H, #23SJMP KETTHUC

NHAN : MOV 30H, #32KETTHUC: END

Kt qu nh c a ch 30H l:a. 23H b. 20H c. 17H d. 32H

525. Cho on m Assembler sau :ORG 0000HMOV R1, #10MOV A, #20

LAP: ADD A, #2DJNZ R1, LAPEND



63/64


526. Cho on m Assembler sau :ORG 0000HCLR CMOV R1, #10MOV A, #100

LAP: SUBB A, #2DJNZ R1, LAPEND



MOV R1, #10MOV A, #100LAP: DEC A

DJNZ R1, LAPEND

Kt qu ca thanh ghi A l:a. 10H b. 5AH c. 64H d. 99H

528. Cho on m Assembler sau :ORG 0000HMOV R1, #10MOV A, #20

LAP: INC ADJNZ R1, LAPEND

Kt qu ca thanh ghi A l:a. 20H b. 30H c. 1EH d. E1H

529. Cho on m Assembler sau :ORG 0000HMOV R1, #5MOV A, #3BH

LAP: RR ADJNZ R1, LAPEND

Kt qu ca thanh ghi A l:a. 3BH b. D9H c. B3H d. CEH

530. Cho on m Assembler sau :ORG 0000HMOV R1, #5MOV A, #3BH

LAP: RL ADJNZ R1, LAPEND

Kt qu ca thanh ghi A l:a. 67H b. D9H c. 76H d. B3H


64/64


531. Cho on m Assembler sau :ORG 0000HMOV R1,#8MOV A,#3BH

LAP: RR ADJNZ R1,LAPEND

Kt qu ca thanh ghi A l:a. 67H b. D9H c. 3BH d. CEH

532. Cho on m Assembler sau :ORG 0000HMOV R1, #8

MOV A, #3BHLAP: RL ADJNZ R1, LAPEND

Kt qu ca thanh ghi A l:a. 3BH b. D9H c. 67H d. CEH

533. Cho on m Assembler sau :ORG 0000HMOV A, #0F3HADD A, #3BHJC NHAN

MOV R1, #35HSJMP KETTHUC

NHAN : MOV R1, #45HKETTHUC: END

Kt qu thanh ghi R1 l:a. 35H b. 45H c. 3BH d. FFH

Documents

DE_CUONG_ON_THI_MON_VI_XU_LY_co dap an(1)