Question

Q.2 Design a sequential circuit by using T-flip flop which can detect a sequence of three or more

consecutive 0’s in a string of bits coming through an input line.

Answer 1

The state diagram

$S_o=0 \space \space \space \space0$

$S_1=0 \space \space \space \space1$

$S_2=1 \space \space \space \space0$

$S_3=1 \space \space \space \space1$

State Table= The state of the T flip flop is defined using the acitation table of T flipflop