45 lines
1.1 KiB
Markdown
45 lines
1.1 KiB
Markdown
---
|
|
categories:
|
|
- Computer Architecture
|
|
- Electronics
|
|
- Hardware
|
|
tags: [logic-gates]
|
|
---
|
|
|
|
# AND gate
|
|
|
|
Just as we can create `NOT` logic from a NAND gate, without the `AND` conditions, we can create a circuit that exemplifies the truth conditions of `AND` just by discluding those of those of `NOT`.
|
|
|
|
When we attach two NAND gates in sequence connected to two switches as input this creates the following binary conditions:
|
|
|
|
```
|
|
A B Output
|
|
_ _ _____
|
|
|
|
1 1 1 (1)
|
|
1 0 0 (2)
|
|
0 1 0 (3)
|
|
0 0 0 (4)
|
|
```
|
|
|
|
Which is identical to the truth table for `AND` :
|
|
|
|
```
|
|
p q p & q
|
|
_ _ _____
|
|
|
|
t t t (1)
|
|
t f f (2)
|
|
f t f (3)
|
|
f f f (4)
|
|
```
|
|
|
|
**An AND at 0 0 :**
|
|
|
|
|
|
|
|
**AND at 1 0 or 0 1 :**
|
|
|
|
|
|
**AND at 1 1**
|
|
|