Logic circuits
What is an advantage of a synchronous circuit, in which all flip-flops operate on a common clock?
- APower consumption is always zero
- BTiming is easy to design and verify
- CNo clock is needed
Show answer and explanation
Answer: B. Timing is easy to design and verify
In a synchronous circuit, data is updated together at clock edges, so correct operation is ensured by checking that the delay between flip-flops fits within the clock period. This is easy to verify with tools such as static timing analysis, and almost all large digital circuits are designed synchronously.