Sahithyan's S2 — Computer Organization and Digital Design
D Flip-flop
Aka. data or delay flip-flop. Captures and stores the input at a specific tick.
Has 2 inputs:
Characteristics
- Edge-triggered: The D flip-flop changes its state only on the rising or falling edge of the clock signal.
- Single input: It has a single data input (D) and two outputs (Q and Q’).
- Data storage: It is commonly used to store a single bit of data.
Excitation table
| Current State (Q) | Next State (Q+) | D |
|---|---|---|
| 0 | 0 | 0 |
| 0 | 1 | 1 |
| 1 | 0 | 0 |
| 1 | 1 | 1 |