QUESTION 49 What is the difference between Latch & Flip Flop?
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QUESTION 49
What is the difference between Latch & Flip Flop?
Show answer & explanation
Answer: A. Latches are Level Triggered and Flip Flop are edge Triggered.
The fundamental distinction between latches and flip-flops is their triggering mechanism. Latches are asynchronous devices that respond to level-triggered inputs (output changes whenever input changes at that logic level), while flip-flops are synchronous devices that respond to edge-triggered clock signals (output changes only on rising or falling edges of the clock). This makes flip-flops more suitable for synchronous sequential circuits.
Step-by-step Derivation:
Key differences:
- Triggering: Latches use level triggering (no clock needed); Flip-flops use edge triggering (clock dependent)
- Synchronization: Latches are asynchronous; Flip-flops are synchronous
- Circuit Type: Both are digital (C is incorrect)
- Storage: Both store bits/data equally (D is incorrect and imprecise)
- Application: B is backwards—latches are asynchronous, flip-flops are synchronous
Option A correctly captures the primary technical distinction.