AT89C51 yog lub chaw tswj hwm rau cov ntxaij vab tshaus LED. Qhov ceev ntawm AT89C51 microcontroller ua tiav cov lus qhia, lub sij hawm luv luv T, thiab cov ntsiab lus ruaj khov dua pom ntawm LED dot matrix screen. Cov siv lead ua oscillator zaus hauv Circuit Court no yog 6MHz. CPU xaiv 27C040 los ntawm A15, A14, thiab nplooj ntawv latch 74HC273 raws li cov lus qhia hauv kev pab cuam, rho tawm cov cim Suav lossis cov cim cim kom pom, thiab xa lawv mus rau CPU los ntawm PO chaw nres nkoj. Lub CPU hloov cov lej cim Suav rau hauv cov lej sab hauv los ntawm kev qhia cov lus qhia thiab tso tawm lawv los ntawm PO chaw nres nkoj. Thaum lub sijhawm no, 74LS138 tau ua rau xaiv cov khoom sib txawv latches 74LS273 lossis 74LS374, qhov twg 74LS273 yog 9th kab tawm ntawm cov lattice, 74LS374 yog 9th kab tso tawm ntawm lub lattice, thiab 74LS374 yog cov kab tawm ntawm kab. RAM6264 ua haujlwm raws li qhov chaw nyob rau nplooj ntawv tsis pom, siv rau kev tswj hwm ntawm qhov screen.
