Question

b) A sequential circuit is constructed with one T flip-flop A, one D flip-flop B and one input X, when X=0, the state of the circuit remains the same.When X=1, the circuit goes through the transitions from 00 to 01 to 11 to 10 back to 00, repeat.

(i) Draw the state transition diagram

(ii) Construct the state Table

(iii) Draw the circuit.

Answer 1

So design Sequential circuit sequential circuit constructed with Given A-T flip-flop B- p flip flop x- input when X=0 the same y remains when x=1 → The circuit goes to od, repeat through 00-01-10-10 back (i) state transition diagram X=0 100 X=1 Xal X=0 01 X=0 X=1 X=1 1

(i) state balle:- uring I flippbp and a flip flop To_input D-input present state input Nextilate DB At Bt TA A B Х 0 0 o 0 O 0 0 1 0 - 0 o O 0 0 O - - 0 1 O 0 0 0 - 1 0 0 O - 1 0 In a flip flop next state =D equations :- uring I-map BX A 00 011 11 lo TA :- 0 TA - ABX + ABX TA - X(ADB)

DB:- Bx Oo oo D lo 0 1 +2 = ABX+Āx BXH AX DB Gic) ciruit diagrams X (input) A A A tot B B clock