You are viewing a free preview of this lesson.
Subscribe to unlock all 10 lessons in this course and every other course on LearningBro.
Flip-flops are sequential logic circuits — unlike combinational circuits (gates), their output depends not only on the current inputs but also on the previous state. Flip-flops are the fundamental building blocks of memory, registers, and counters in digital systems.
| Type | Output depends on | Memory? | Examples |
|---|---|---|---|
| Combinational | Current inputs only | No | AND, OR, NOT gates, adders |
| Sequential | Current inputs AND previous state | Yes | Flip-flops, registers, counters |
Key Term: A flip-flop stores one bit of information. It has two stable states (0 and 1) and can be set to either state by applying appropriate inputs.
The SR flip-flop has two inputs: S (Set) and R (Reset), and two outputs: Q and NOT Q (the complement of Q).
Behaviour:
Subscribe to continue reading
Get full access to this lesson and all 10 lessons in this course.