CHAPTER 4 COUNTER

Asynchronous 3 bit down counter

Asynchronous down counter

Asynchronous down counter

4 Bit Asynchronous down counter

4 Bit Asynchronous down counter

4 Bit Asynchronous down counter

UP/DOWN COUNTER UP Counting = the Q o/p of the preceding f/f s connected to the clock of the next stage if up counting is to be achieved. For this mode the mode select i/p M is at logic 0 (M=0). DOWN Counting = if M= 1 then the o/p of the preceding f/f s connected to the clock of the next ff. this will operates the counter in the down counting.

3 BIT UP/DOWN COUNTER

3 BIT UP/DOWN COUNTER

3 BIT UP/DOWN COUNTER

3 BIT UP/DOWN COUNTER

MOD 10 DECADE COUNTER( ASYNCHRONOUS UP COUNTER)

MOD 10 DECADE COUNTER

MOD 10 DECADE COUNTER

MOD 10 DECADE COUNTER

MOD 10 DECADE COUNTER