Draw the block diagram and logical circuit diagram along with their general truth table for the following flip flops

Question

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

Answer 1

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 |
```

Answer 2

Sure! Here are the block diagram and logical circuit diagrams for the S-R, D, J-K, and T flip flops, along with their general truth tables:

1. S-R Flip Flop:
Block Diagram:
```
+---+ +---+
S ----| |---| |
| S-R | | Q |--------> Q
R ----| Gate |---| / |--------> /Q
+---+ +---+
```

Logical Circuit Diagram:
```
___
S| \ ___
+----|---|D
___
R| \ ___
+----|---|D
```

General Truth Table:
```
S | R | Q(t) | Q(t+1)
==============================
0 | 0 | Q | Q
0 | 1 | Q | 0
1 | 0 | Q | 1
1 | 1 | indeterminate (X)
```

2. D Flip Flop:
Block Diagram:
```
+---+
D ----| |
| D | | Q |--------> Q
CLK --| Flip |
+---+
```

Logical Circuit Diagram:
```
___
D| \ ___
+----|---|D
CLK | +---x------|
|
\
/ Q
\Q
```

General Truth Table:
```
CLK | D | Q(t) | Q(t+1)
===============================
0 | 0 | Q | Q
0 | 1 | Q | Q
1 | 0 | Q | 0
1 | 1 | Q | 1
```

3. J-K Flip Flop:
Block Diagram:
```
+---+
J ----| |
| J-K | | Q |--------> Q
K ----| Flip |
+---+
```

Logical Circuit Diagram:
```
___
J| \ ___
+----|---|D
___
K| \ ___
+----|---|D
```

General Truth Table:
```
J | K | Q(t) | Q(t+1)
==============================
0 | 0 | Q | Q
0 | 1 | Q | 0
1 | 0 | Q | 1
1 | 1 | Q | ~Q (complement of Q)
```

4. T Flip Flop:
Block Diagram:
```
+---+
T ----| |
| T | | Q |--------> Q
CLK --| Flip |
+---+
```

Logical Circuit Diagram:
```
___
T| \ ___
+----|---|D
CLK | +---x------|
|
\
/ Q
\Q
```

General Truth Table:
```
CLK | T | Q(t) | Q(t+1)
======================================
0 | 0 | Q | Q
0 | 1 | Q | Q
1 | 0 | Q | ~Q (complement of Q)
1 | 1 | Q | ~Q (complement of Q)
```
In the above truth tables, `Q(t)` represents the output state at time `t`, and `Q(t+1)` represents the output state at the next clock cycle (time `t+1`).