Full Adder (cont'd)
A
0
0
0
0
1
1
1
1
B
0
0
1
1
0
0
1
1
CI
0
1
0
1
0
1
0
1
S
0
1
1
0
1
0
0
1
CO
0
0
0
1
0
1
1
1
A B
CI
0
1
00
01
11
10
0
1
1
0
1
0
0
1
A B
CI
0
1
00
01
11
10
0
0
0
1
0
1
1
1
S
CO
S = CI xor A xor B CO = B CI + A CI + A B = CI (A + B) + A B
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