Thuc Hanh Ky Thuat So V5.2

7/28/2019 Thuc Hanh Ky Thuat So V5.2

1/35


2/35

L thuytcbn Giithiumt vi IC scbn Lp rp mch pht xung ngh 1Hz dng IC 555 Lp rp mch nhy ntunt dng IC 4017 Lp rp mchn giao thng dng IC 4017 Lp rp mchm m BCD 8421bng IC 7490 v hinth trn LED 7 on dng IC gii m 7447

Lp rp mchm ton chnhoc ton l trn csmchm BCD 8421

Ti liu:

Trng Minh Huy - Khoa CNTT -H BKN - [email protected] 2


3/35

in tr Tin Ngun nui

Tn hiu xung clock (xung ng h) Mch pht n Ledn Led 7 on Mch Test Board



4/35

in tr n v tnh l Ohm Chia lm 2 loi chnh:

Trthng

Tr cng sut ( >1W)

Gi trin tr sc theo vch mu in trn thn in tr. Trong vch chdung sai t tay phi khi c gi tr v thng cmu nh vng hoc bc

Thng thng ta s dng tr W

in tr 1/4W



5/35

+ + nu + nh vng 22122*10^1 =220 Ohm



6/35

Tin n v l Fara Nhng thng thng chdng n v

Pico Fara (10-12Fara) : pF

Nano Fara (10-9 Fara) :nF

Micro Fara (10-6 Fara) : uF

T ha: 10 micro FaraTgm

104 10*10^4 pF= 100nF

Di+

Ngn-Vchen-



7/35

T khng cc tnh Thng thng l t gm, giy Cch c tr s vi t gm

Ly 2 su * 10^ s th 3 ; n v l pico Fara

Vd: 104 = 100000 pico F= 100 nano F

T c cc tnh: Thng l t ha: di + , ngn hoc ( c mt vch en chth

trn thn)

Cc thng s cn quan tm Tr sin dung

in p chu ng ti a Chn dng

Chn mVchen-



8/35

CHC NNG T khng cc tnh: dp nhiu sinh ra tng c hoc cc

thit b khc, nhiu mi trng, T c cc tnh:

n nh in p cho Vi iu khin hoc cho cc linh kin khc

cn n nh ngun khi hot ng. T c tr s cng ln th thi gian np in cng lu v giin

cng tt hn.



9/35

Ngun nui: Thng thng vi mch s l ngun DC 5V (cng

USB)

Ngun dng: Thng k hiu l Vcc, Vdd: L cc dng5V

Ngun m: Thng k hiu l Vss, GND: l cc 0V



10/35

L xung vung Sn ln (Chuyn mc t 0 ln 1) Sn xung ( chuyn t mc 1 v 0) Mc 1(ton): 5V

Mc 0(toff): 0V

Sn ln

Snxung



11/35

DIODE Cu to t lp tip gip P-N ca vt liu bn dn c im:

Chdninmtchiut P sang N ( t Anod sang Katod); khi in p tcc Asang K >= 0.7V

Nhndngcpin:Anodebtu l AAnh+

Khi dnin th s c in p ri trn thn khong 0.7V Diod nha: chn c vng mu xm l chn Katod

C dng chucnhtnh

C in p ngcnhtnh

Diod 1A:1N4007



12/35

Led ( Light emiting Diode): l diode pht quang. c im:

Khi phn cc thun th s pht sng (VAK>0.7V) i vi diode 5mm ( ng knh), dng in qua diode hot

ng n nh l 20-25mA. Khi mi mua v, chn di hn l chn

Anode



13/35

L khi cu kin c cu to gm 8 diode ni chungAnode hoc Katode Led 7 thanh loi Anode chung: cc Anodeni li vi nhau Led 7 thanh loi Katode chung: c ccKatode ni li vi nhau

Trt t cc thanh : a->g nh hnh

Led 7 thanh

Anode chung



14/35

2 module ngoi () Ngang ni

Dc khng ni Chia i theochiu dc

Thng cp ngunTrong + ngoi -

Module gia (Xanh) Dc ni

Ngang khng ni Chia i theo

chiu ngang



15/35



16/35

IC cha cc cng logic h 74 Bn cng logic 2 u vo 7400 bn cng logic NAND 2 u vo 7403 bn cng logic NAND 2 u vo, u ra h mch

7408 bn cng logic AND 2 u vo 7409 bn cng logic AND 2 u vo, u ra h mch 7432 bn cng logic OR 2 u vo 7486 bn cng logic EX-OR 2 u vo

7402 bn cng logic NOR 2 u vo



17/35

Ba cng logic 3 u vo 7410 ba cng logic NAND 3 u vo 7411 ba cng logic AND 3 u vo 7412 ba cng logic NAND 3 u vo, u ra h mch 7427 ba cng logic NOR 3 u vo

Hai cng logic 4 u vo 7420 hai cng logic NAND 4 u vo 7421 hai cng logic AND 4 u vo

Mt cng logic NAND 8 u vo: 7430 6 cng not 7404 su cng NOT 7405 hex NOT with open collector outputs



18/35

Bm decade (0-9): 7490 Bm BCD 4 bit (0-15): 7493 Hai bm decade (0-9): 74390

Hai bm 4bit (0-15): 74393 Gi m BCD sang thp phn: 7442 Bm decade: 4017iu khin Led 7 on: 7447 (Anode chung) IC to xung ng h: 555



19/35

Cch tm hiu mt IC: Tm trn Google cm t: m s IC+datasheet Download datasheet v tm hiu (dng pdf)

Cch tm chn ca IC sc bn: Trn cnh ca IC khng c chn v c mt vnh

khuyt, ta t cnh ny nm bn tay tri. Chn s 1 snm v tru tin, bn di pha tay tri.i khi cmt du chm chth chn s 1.

Cc chn khctng

dn theo chi

u

ngc chi

u kim

ng h



20/35

Cch nh s th t chn



21/35



22/35



23/35



24/35



25/35



26/35

Ta ni n chn Katode ca n diode li vi nhauth ta s c cng logic OR n u vo

D1

D2

Dn

IN2

IN1

IN3

OUT

U1

OR3

1

2

3

4



27/35



28/35

Mc tch cc l mc 0: ngha l khi chn ra mc 0 thdiode tngng s sng ln



29/35



30/35

bi: hy lp rp mch to xung ng h1Hz bng IC 555

Hng dn: Download datasheet IC 555 v v lp rp theo mch dao

ng a hi nh hnh. Cch tnh chu k:

T_on = 0.693*(R1+R2)CT_off= 0.693*R2*C



31/35

o bi: Hy lp rp mch nhy tunt 10 n led v lpli dng IC 4017oHngdn:

o Dng IC 555 to xung ngh (lytmch dao ng trn)oNgun xung clock sa vo chn CP0 v lp rp mch 4017 mchbtumoMi u ra ca 4017 nivi 1 led bngintr 330Ohm nivt.o

Munmchdng u th ly chn niv chn MR



32/35



33/35

o bi: Hy lp rp mch nhy 3 n led theo hiungn giao thng: 5scho n; 3s cho n xanh; 2s cho n vng.oHngdn:

o Dng IC 555 to xung ngh (lytmch dao ng trn)oNgun xung clock sa vo chn CP0 v lp rp mch 4017 mchbtumo Cc u ra ca 4017 nivimch OR bng Diode xc nhs chuk sng camin. VD: 5 chn u tin nivimch OR cho n.

(Dng diode)



34/35

o bi: Hy lp rp mchm v hintht 0 n 9 trn led 7 thanh bngIC 7490,7447.oHngdn:

o Dng IC 555 to xung ngh (lytmch dao ng trn)oNgun xung clock sa vo chn Clock 0 v lp rp mch 7490btumo Dng IC 7447 gii m nh phn ca 7490 sang led 7 thanhoNiu ra ca 7447 n 7 chn a..g ca led 7 thanh loi anode chung.

Mrng: Hy salimch trn mchm ton chnhoc ton l.



35/35

Thuc Hanh Ky Thuat So V5.2

Documents

Transcript of Thuc Hanh Ky Thuat So V5.2