Ph kin in tI. Gii thiu: Ngoi linh kin in t, cc loi cu kin in t
cng gp phn rt ln vo s hot ng n nh cng nh tnh thm m, linh hot ca mch
in t. Bi vit ny gii thiu hnh nh v tn gi 1 s loi ph kin in t thng
dng gip cc bn mi lm quen vi ngnh ny c ci nhn tng quan nhng th mnh
cn thi cng mch. Lu : Tn gi trong bi vit ny c th cha ng, nhng c s
dng 1 s ca hng bn linh kin a phng. mua ng hng, tt nht bn nn cho ngi
bn xem hnh nh trnh hiu nhm. II. Cc loi board th. (Bread
board-Project board v Test board) Bread board(Project board) l loi
board th linh hot trong vic sp xp linh kin v thay i thnh phn mch do
n khng s dng mi hn m dng thanh kp lin kt linh kin.
Breadboard loi nh. Test board(Board hn) l loi board th s dng mi
hn lin kt, tuy d vn linh hot trong vic sp linh kin nhng li kh thay
i thit k th nghim(phi loi b mi hn hoc thm ch l linh kin). Mt di
test board c th c nhng ng mch n gin ni sn vi cc l khoan cm chn linh
kin.
Mt trc 1 test board lp linh kin.
Mt sau 1 loi Test board III. Cc loi cm - thanh cm 1. IC &
ZIF Socket( cm IC v kp ) ===> cm IC dng cm cc loi IC tng ng ln
mch thay v hn c nh. Ngi ta phn loi theo s chn: 8, 14, 16, 18, 20,
22, 24, 28, 32, 40 Ngoi ra cn phn loi theo hnh dng l cm, b rng IC,
loi IC...
cm IC thng dng
Chip Dn ==> kp: D dng tho gn cho cc chip kh trnh m khng lm tn
hi n chn ca chip. Cng gm cc loi vi s lng chn t 18-40 chn (loi thng
- Standard) v 24 -
40(loi sng hp - Universal) s lng chn thc t c th ln hn ty s pht
trin IC.
kp loi sng hp
kp loi thng.
Ngoi ra, cm IC hay linh kin m khng cn hn, hoc to thnh cc header
(u cm) ngi ta cn s dng mt s ph kin thanh n - kp(c ngi gi l jump,
pin header...), c th ct nh ty ph hp nhu cu s dng.
Thanh socket trn 40 pin(chn)-n
Thanh header 40 pin n c(male)
Thanh socket 40 pin n ci(female)
Thanh header 40 pin c cong 90 Nu dng pin header c nh jump th ta
dng cc jumper ni tt 2 pin gn nhau.
Cc jumper 2. cu ch
3. Pin 3V (Pin CMOS)
PIN v PIN CMOS (pin 3v nui ng h thi gian thc) IV. Connector 1.
Domino - Khi ni Domino cung cp nhiu mi ni ng c th d dng tho lp.
Khi ni
Khi ni dng cho mch in 2. Kp Pin v Hp Pin Kp Pin tiu chun c ch ti
kp u pin 9V hoc 1 s loi hp pin nh hp pin 9V hay hp 6 pin AA(pin
tiu). Kp c ch to km dy ni hn vo mch in.
Kp Pin 9V Pin 9V Nhiu n in t nh thng s dng hp 1 pin 9V, tuy nhin
hp 6 pin AA(1.5 x 6 =9) l la chn tt nu bn mun mch in hot ng lu hn v
tuy cng in th nhng 6 pin AA s c tr lng cao hn.
Hp 6 pin AA vi u dng pin 9V
Pin AA - 1,5 V 3. USB connector Chun kt ni USB(Universal Serial
Bus)
Loi A ------Loi B
Cable kt ni vi u cm tng ng. 4. Jack ngun DC
Jack ngun DC
u cm tng ng 5. Jack DB9 v DB25 ng dng thng thy l cng ni tip(cng
COM dng DB9) v cng song song (LPT dng DB25) ca my tnh. N cng l 1
chun kt ni quan trng, cn nhiu loi DB vi s lng chn cm khc.
Jack DB9 (tri) v DB25 (phi)--loi c (trn) v ci (di) V. Cc loi
switch( cng tc) 1.Nt nhn (Push button) - Contac 1 trng thi (SPST)
Thng phn 2 loi: nt nhn thng ng v thng m
2. Cng tc dy (DIP Switch) Tp hp nhiu cng tc c lp
3. Cng tc dy xoay(Rotary DIP Switch) Cng tc nhiu trng thi la chn
bng cch xoay
4. Cng tc 2 trng thi (SPDT)
VI. Header - Cable 1. Header v cable chun IDC Header c th dng to
cng ni hoc cc lin kt ring l, thng gp l loi 5x2, 10x2, 40x2(cp nhuyn
IDE ca my tnh). Cable IDC (flat cable) dng cho loi header ny c bm
bi socket v cable v c di ty .
u cm 5x2
cm (cha bm thnh cable)
Cable bm. Xem hng dn bm cable ny [Ch c thnh vin mi xem c link
ny. ] 2. Cp b Cng thng c s dng nhm thay th mng dy in chng cht bng
cable hoc to cng ni...
Socket(nm trn cable)
Header(nm trn mch) Thng dng nht l loi 1 hng chn vi s lng chn khc
nhau. Header trn board c th thay th bng pin header nhng khi cm phi
ch chiu dy v tt c cc chun cable kt ni u c c cu chng cm nhm. Theo
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