Cov txheej txheem:
- Kauj Ruam 1: Chip Nws Tus Kheej
- Kauj ruam 2: Lub Sijhawm Circuit Court
- Kauj ruam 3: Tiav Circuit Court
- Kauj ruam 4: Teeb meem tua
Video: 74HC393 Binary Counter: 4 Kauj Ruam
2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25
74HC393 yog siv dav dav nti nti. Nws lub luag haujlwm tseem ceeb yog ua binary counter. Tus lej binary zoo ib yam rau Decade counter xws li paub zoo 4017 Johnson txee, tab sis 74HC393 txee ua haujlwm txawv me ntsis (raws li koj yuav pom tom ntej).
Kauj Ruam 1: Chip Nws Tus Kheej
74HC393 yog 14 tus pin dual binary counter ic nti, txhua lub txee muaj 'Clock', 'Reset' thiab plaub qhov tawm. Thawj lub txee suav nrog tus pin 1-6, tus lej thib ob siv tus pin 8-13
Pin 1 & 13 yog ob qho 'Clocks'. 'Moos' yog lub tswv yim rau nws lub txee (tsis yog tag nrho cov nti).
Pin 2 & 12 yog ob qho 'Pib dua', 'rov pib dua' qhia lub txee thaum yuav tsum nres thiab rov pib dua. Qhov 'rov pib dua' yog lub ntsiab lus siab nws tsuas yog rov pib dua yog tias lub teeb liab mus rau nws siab.
Tus Pin 3-6 & 8-11 yog qhov tso tawm, cov no yog cov pins qhov twg cov ntaub ntawv ua tiav tawm los ntawm cov nti.
Pin 7 yog av.
Pin 14 yog lub zog (5v)
Nco ntsoov, ob lub txee yuav tsis cuam tshuam nrog ib leeg tshwj tsis yog tias koj txuas rau lawv, thiab qhov no yog lub rooj sib tham binary yog li tsis muaj kaum qhov kev txiav txim siab tso tawm.
Cov ntaub ntawv rau lub nti (los ntawm Texas Instruments) yog hauv qab no:
Kauj ruam 2: Lub Sijhawm Circuit Court
Txhawm rau ua kom pom li cas Binary txee ua haujlwm, Kuv tau muab tso ua ke ib qho yooj yim Circuit Court uas yuav siv ib ntawm ob lub txee thiab khiav nws qhov suav yooj yim ua ke (Binary).
'Clock' yuav tau txais cov tswv yim los ntawm 555 lub sijhawm ua haujlwm nyob rau hauv hom astable tso tawm ntau zaus ntawm ib puag ncig 2.2Hz, tsuas yog txaus rau koj kom ntes cov txiaj ntsig ntawm lub txee tsis tas nws txav mus rau tom ntej, txawm hais tias qhov zaus tuaj yeem hloov kho los ntawm kev sib tw lub potentiometer. Lub Circuit Court yuav ua tiav tsis siv neeg tab sis yuav suav nrog khawm rov pib dua. Daim duab hluav taws xob qhia txhua yam yog li koj tsis tas yuav ua raws tus hneev taw ntawm lub khob cij, hmoov tsis zoo, Kuv tsis muaj tus hneev taw rau 74HC393 nti yog li kuv yuav tsum ua kuv tus kheej.
Hauv kab lus no, koj yuav xav tau:
1x555 ua
1 tx743
1 x 10k potentiometer
1 x 22 uf capacitor
1x 10k resistor, 1x 680ohm (lossis ib ncig 680) resistor R1 = 680, R2 = 10k
1x laub khawm
4x LED ua
Thiab 5v DC lub zog siv hluav taws xob (USB yuav ua haujlwm tau zoo), lub khob cij thiab qee lub xov hlau txuas.
Kauj ruam 3: Tiav Circuit Court
Thaum koj ua tiav kev sib dhos hauv Circuit Court, ntsaws lub hwj chim rau hauv!
Dab tsi koj yuav tsum pom yog LEDs flashing random. Lawv tsis flashing randomly txhua, qhov tseeb, lawv tau tso tawm cov lej, lub txee tsuas yog suav los ntawm 0 txog 15 hauv binary thiab qhov koj pom yog peb tus lej ib txwm nyob hauv hom binary. Muaj cov lej lej binary los ntawm 0 txog 15 ntawm no.
Qhov no yog lub hom phiaj yooj yim ntawm kev sib tw binary (suav hauv binary), tab sis muaj ntau txoj hauv kev siv rau 74HC393 nti. Feem ntau cov kev sib txuas uas cuam tshuam nrog lub xyoo kaum xyoo tuaj yeem hloov pauv nrog lub txee binary xws li qhov no.
Kuv yuav tshaj tawm qhov xwm txheej loj uas tsim nyog siv 74HC393 ntawm no sai sai no tab sis tam sim no, kev ua qauv qhia rau lub nti yuav ua.
Kauj ruam 4: Teeb meem tua
Yog tias lub Circuit Court tsis ua haujlwm xyuas cov hauv qab no:
- Cov kev taw qhia ntawm cov khoom siv polarized
- Teeb meem cov kab me me
- Lub hwj chim qhov chaw
- Cov chips (yog tias lawv ua haujlwm lossis tsis ua)
Yog tias tsis muaj ib qho ntawm qhov daws qhov teeb meem, sim tsim lub Circuit Court dua.
Cov lus nug lossis cov lus qhia yuav zoo siab hauv cov lus!
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