SEQUENCE: 000,101,111,110,100,001...REPEAT
DESIGNED WITH T FF
NEXT STATE TABLE
C
B
A
C+
B+
A+
0
1
-
Tc=A'B'
Tb=AC
Ta=AB+A'B'+C'
Implementation of 4-BIT ASYNCHRONOUS UP COUNTER using Flip FLops
Implementation of a 4 BIT Asynchronous Counter using JK FLIP-FLOPS and T-FLIP FLOPS
WHEN 'UP' INPUT IS LOW, IT IS UP COUNTER AND WHEN 'UP' INPUT IS HIGH, IT ACTS AS DOWN COUNTER.