Lab 3

OBJECTIVE

TO VERIFY TRUTH TABLE OF HALF ADDER AND HALF SUBTRACTOR

APPARATUS REQUIRED

1. Connecting wires

2. Breadboard kit

3. IC 7408(AND Gate)

4. IC 7486(XOR Gate)

CIRCUIT DIAGRAM OF HALF ADDER

Half Adder

TRUTH TABLE OF HALF ADDER

Inputs		Outputs
A	B	Sum	Carry
0	0	0	0
0	1	1	0
1	0	1	0
1	1	0	1

CIRCUIT DIAGRAM OF HALF SUBTRACTOR

Half Subtractor

TRUTH TABLE OF HALF SUBTRACTOR

Inputs		Outputs
A	B	Difference	Borrow
0	0	0	0
0	1	1	1
1	0	1	0
1	1	0	0

RESULT

The truth table of Half Adder and Half Subtractor is verified successfully.