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Half Adder
A half adder is a digital logic circuit that performs binary addition of two single-bit binary numbers. It has two inputs, A and B, and two outputs, SUM and CARRY. The half adder can be implemented using basic gates such as XOR and AND gates.
Credit: GeeksForGeeks
You can make a simple half adder with the following:
- XOR Gate
- AND Gate
- 2 Switches
The AND gate shows the "carry over" while the XOR gate shows the sum. Carry over shows the tens digit of a binary number.
The truth table of the circuit is shown here:
| Inputs | Outputs |
|---|---|
| 0,0 | 0,0 |
| 1,0 | 0,1 |
| 0,1 | 0,1 |
| 1,1 | 1,0 |
Where in the outputs column, the first digit from the left is the tens place and the right-most digit is the ones place.
EF0601 contributed to this article.