1. S-R Flip Flop:
Block Diagram:
```
S _____
------| Q | |
----| |-------| D |
| |_______| |_____|
| |
| |
| R _____|
----| Q | |
|-------| Set |
| |_____|
|
|
Н
```
Logical Circuit Diagram:
```
___
S ----| |------
___ |
| | ________
R ----|___|----- |--| |
| |____ D __|
|
| ________
|--| Q |
|________|
```
General Truth Table:
```
| S | R | Q(n) | Q(n+1) |
|---|---|------|--------|
| 0 | 0 | 0 | 0 |
| 0 | 0 | 1 | 1 |
| 0 | 1 | 0 | 0 |
| 0 | 1 | 1 | 0 |
| 1 | 0 | 0 | 1 |
| 1 | 0 | 1 | 1 |
| 1 | 1 | 0 | X | (Invalid)
| 1 | 1 | 1 | X | (Invalid)
```
2. D Flip Flop:
Block Diagram:
```
D
---| |--------|
| |______| |
| Q |
|----------------------
```
Logical Circuit Diagram:
```
___
D ----| |------
___ |
| | ________
|____D ---|--| |
|____ Q __|
```
General Truth Table:
```
| D | Q(n) | Q(n+1) |
|---|------|--------|
| 0 | 0 | 0 |
| 0 | 1 | 0 |
| 1 | 0 | 1 |
| 1 | 1 | 1 |
```
3. J-K Flip Flop:
Block Diagram:
```
J _____
------| Q | |
----| |-------| D |
| |_______| K |_____|
| |
| |
| Н _____|
----| Q | |
|-------| Reset|
| |______|
|
|
Н
```
Logical Circuit Diagram:
```
___
J ----| |------
___ |
| | ________
K ----|___|-----|--| |
| |____ D __|
|
| ________
|--| Q |
|________|
```
General Truth Table:
```
| J | K | Q(n) | Q(n+1) |
|---|---|------|--------|
| 0 | 0 | 0 | 0 |
| 0 | 0 | 1 | 1 |
| 0 | 1 | 0 | 0 |
| 0 | 1 | 1 | 0 |
| 1 | 0 | 0 | 1 |
| 1 | 0 | 1 | 1 |
| 1 | 1 | 0 | 1 |
| 1 | 1 | 1 | 0 |
```
4. T Flip Flop:
Block Diagram:
```
Ж
---| |--
| T |
|----------|
|
|
```
Logical Circuit Diagram:
```
__
T ----| |------
__ |
| | ________
|___T _| | |
|____ Q __|
```
General Truth Table:
```
| T | Q(n) | Q(n+1) |
|---|------|--------|
| 0 | 0 | 0 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 1 | 1 | 0 |
```
Draw the block diagram and logical circuit diagram along with their general truth table for the following flip flops
1.S-R flip flop
2.D-flip flop
3.J-k flip flop
4.T flip flops
1 answer