All mock tests are FREE till 31 December — register to save your progress
Unit 2 · Computer System Architecture Paper 2 CS · December 2022 Shift 1

A 3-bit synchronous counter uses T flip-flops P, Q, R (all clocked together) with inputs T_P = R, T_Q = P′ and T_R = Q′. If the initial state PQR is 000, what are the next three states?

Pick an option to check yourself, or open the answer below.

Show answer & explanation

Correct answer: A. 011, 101, 000

Explanation

From 000: T_P = 0, T_Q = 1, T_R = 1 → 011. From 011: T_P = 1, T_Q = 1, T_R = 0 → 101. From 101: T_P = 1, T_Q = 0, T_R = 1 → 000.

More Computer System Architecture questions