Question

Q1. Design a two bit counter circuit that counts from 0 to 2. It should have states 00, 01 and 10.
The initial state of the counter may be assumed to be 00. The counter will be in following
successive states: 00, 01, 10, 00, 01, 10, 00, 01, 10, 00 ... Use J-K flip flop to design the
circuit. You must design the circuit using state transition diagram and Karnaugh's maps.​

Answer 1

DA indicates the flip flop input corresponding to flip-flop-A. This counter requires 2-flip-flops. From this the flip flop input equations are simplified using K-Maps as shown below. The logic circuit can be made with 2 D flip flops, 2 OR gates & 4 AND gates.

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