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Electronic Lab Manuał

Laboratory 4. The Fuli Adder ComponenŁs: IC 7486. IC 7408. IC 7432 Theory:

FULL ADDER:

A fuli adder is a combinational circuit that forms tlie arithmctic sum of input: it consists of three inputs and t\vo outpuLs. A fuli adder is aseful to add three bits at a time but a half adder cannot do so. In fuli adder sum output will be taken from X-OR Gate. carry output will be taken from OR Gate.

a) Using Logic Gates:

Figurę. The Fuli Adder Circuit

(b) Vary inputs Ak Bk and Ck-1 and complete a Truth table for the circuit.

A	B	co	SI	Cl
0	0	0
0	0	1
0	1	0
0	1	1
1	0	0
1	0	1
1	1	0
1	1	1

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