Hard
EST. TIME: 45 minSynchronous and Asynchronous Counters
To realize and verify the truth table of Asynchronous and Synchronous counters.
Theory
Counters are sequential circuits that go through a prescribed sequence of states.
- Asynchronous (Ripple): Flip-flops are not clocked simultaneously. Simple but slower.
- Synchronous: All flip-flops clocked together. Faster and glitch-free.
Procedure
- Connect JK Flip-Flops in toggle mode.
- Asynchronous: Output of one FF drives clock of next.
- Synchronous: Clock is common. Logic gates control J,K inputs used for counting sequence.
- Reset the counter and apply clock pulses. Observe the binary count sequence.