5.1 5.2 5.3 5.4 555 5.5

555

1SS2S1S4

101 2 3

5.1.1 RS12RS01 RS 11201101R: ResetS: Set3RS

QnQn+100 00 11 1100 11001101010101XX00 1101

RSRSRS

RS CP CP CP

2. 1CP=1RS

CP=1CPQnCPQn+1RSR S RS

0 RS 101

2. 2

5.1.3 1. T :01

2. T :?

T T T ,T 1

TQnQn+1001101010110

3. D D D

DQnQn+1001101010011

4. JK JK

JK 01 J K 11201101

JKQnQn+100

00

11

1100

11

00

1101

01

01

0101

00

11

10

JKQn+100110101Qn 0 01 1

CP123

JK JK JK1 0

J K 11201101 T T ,T 1 T RS 11201101 D D

5.2 JK D

2. JK T

T J=TK=T1T:

T :

3. D JK

4. D T T

5.3

5.3.1 1. 1

5.3.2 1. 2. 0101DCP4 4 Q0Q1Q2Q3= 0101 1011101010

RS 5.3.3

A01B00RSa bS .

5.3.4 1. ?

2.

555555 555 5.4 555

555

1 C1C2 RS G3 TVCCVCCQ5.4.1 555UR1UR2UC1UC22

555

RD(4) TH (6) TR (2) UO(3)T(7) 0 0 1> (2/3)VCC> (1/3)VCC 0 1< (2/3)VCC< (1/3)VCC 1 1< (2/3)VCC> (1/3)VCC

NE555555

5.4.2 5551

UT+2/3)VCC UT 1/3)VCC UT+ UT 1/3)VCC

3

2555

RD(4) TH (6) TR (2) UO(3)T(7) 0 0 1> (2/3)VCC> (1/3)VCC 0 1< (2/3)VCC< (1/3)VCC 1 1< (2/3)VCC> (1/3)VCC

1 2 3

3555 2uI=1

1 2 3

uOuItw

twtw()

5.5

1.JK JK74LS112(a) (b) 74LS112JKSDRD10 1 74LS112

2 74LS112

3 74LS1120110

2. D D74LS74(a) (b) 1 D74LS74

2 D74LS74 CP 01

3 0D1

a b 74LS74 CP CPCPS3.

1. 2.RSRS RSJKDTT

3.RST DTJKDTT 4. 5.DJK

3.3 3.5 3.6 3.7 3.8