CSC 347/ENS 221

Lab 6 Sequential Design

Design Problem – Text 5-16 page 214

Design a sequential with two D flip-flops A and B, and one input x. When x = 0 the state of the circuit remains the same. When x =1, the circuit goes through the state transitions from 00 to 01 to 10 back to 00 and repeats.

7474 dual D=Type Flip-Flop

3 realizations

The combinational logic is realized with the use of

R1 TTL gates

R2 74154 Decoder

R3 2-74151 MUXs