S ev enth S emeste r Bra nch es Ele ct ro ni cs an d Communic at io n Engin ee ri ng, Appli ed Ele ct ro nic s . and Ins trum ent ation Answer a l l questions. P art A 1. Nam e th e su bf am ili es of TTL an d ex pl ain br ie fl y ab out ea ch on e. 2. Wha t are gate arr ay s? 3. Wha t is m eant by bo un ci ng effe ct of a ke y sw itc h? How it can be elim in at ed ? 4. What fo r the pin s V EE an d RS are used in a LC D? 5. Dra w the sc he mat ic of fl as h ty pe ADC . 6. Ex pla in th e op er atio n of op to- co up ler. 7. Disc uss ab ou t MAX .232 line driv er. 8. Lis t th e fe at ure s of RS 232 b us st an dar d. 9. Wha t fo r th e wat ch do g tim er is u se d? 10 . Ho w th e sp ee d an d dir ec tion ro tati on of ste pp er moto r is co ntr oll ed ? P a rt B 11 . Draw the schem at ic of2 2 V 10 PA L de vic e and ex pla in, als o dra w th e sch em ati c of 22 V 10macroce ll. Or 12 . Disc us s ab ou t (a ) P AL ; (b ) FI FO ; an d (c ) Dua l po rt RAM. 13. Dra w the in te rn al ar ch ite ct ur e of 89 C 5 1 m icro co nt roller in blo ck di agram fo rm an d ex pla in . Or 14 . Desi gn a m icr oc on tro lle r ba se d tra ffi c lig ht co ntr ol sy ste m. 15. Wit h th e hel p of c ir cu it dia gr am , ex pla in ho w a success ive ap pr ox im at i on type ADC ca n be interf ac ed to a micro contro ller. Or 16. Design a te mpe rat ure cont rol ler us in g a microcontro ller.
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