Design and verification of the truth tables of Half and Full adder circuits.
Logic trainer kit, NAND gates (IC 7400), XOR gates (IC 7486), AND gates (IC 7408), wires.
Half adder:
Truth Table for Half Adder
Input | Output | ||
A | B | Sum | Carry |
0 | 0 | 0 | 0 |
0 | 1 | 1 | 0 |
1 | 0 | 1 | 0 |
1 | 1 | 0 | 1 |
Full Adder:A full adder is a combinational circuit that forms the arithmetic sum of input; it consists of three inputs and two outputs. A full adder is useful to add three bits at a time but a half adder cannot do so. In full adder sum output will be taken from X-OR Gate, carry output will be taken from OR Gate.
Truth Table for Full Adder
Input | Output | |||
A | B | C | Sum | Carry |
0 | 0 | 0 | 0 | 0 |
0 | 0 | 1 | 1 | 0 |
0 | 1 | 0 | 1 | 0 |
0 | 1 | 1 | 0 | 1 |
1 | 0 | 0 | 1 | 1 |
1 | 0 | 1 | 0 | 1 |
1 | 1 | 0 | 0 | 1 |
1 | 1 | 1 | 1 | 1 |
Thus the half adder &full adder was designed and their truth table is verified.
Get all latest content delivered to your email a few times a month.