Jump to content
ELFORUM - Forumul electronistilor

Ciruite integrate digitale


Guest Smarius

Recommended Posts

Guest Smarius

Am o dificultate in a intelege aceasta problema . Ar putea sa ma ajute cineva?Define and design a circuit which receives a one-bit wave form and shows on its three one-bit outputs, by one clock cycle long positive impulses, the following events: • any positive transition of the input signal • any negative transition of the input signal • any transition of the input signal.

Link to comment
  • Replies 3
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Problema cere in esenta realizarea unui detector de fronturi. La intrare se aplica o secventa de date aleatoare, care vin pe un singur bit. De exemplu poate fi o linie seriala. Ai nevoie si de un clock asociat cu datele. Circuitul tau are 3 iesiri. Una semnaleaza fronturile pozitive, adica tranzitia din 0 in 1, a doua semnaleaza fronturile negative, iar cea de-a treia semnaleaza orice tranzitie, fie ea pozitiva sau negativa.O posibila realizare s-ar face cu un bistabil D pe post de memorie si un XOR intre data curenta si data anterioara (iesirea Q) ptr. detectat orice tranzitie, o poarta AND intre iesirea XORului si date ptr detectia frontului pozitiv si un NOR intre iesirea XORului si date ptr detectia frontului negativ. Nu sunt 100% sigur, dar trebuie pus pe hartie si desenate cateva forme de unda. Probabil ca mai sunt solutii, care optimizeaza nr de porti folosite.

Link to comment
  • 2 weeks later...

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.Terms of Use si Guidelines