Design example: BCD increment by 1 (cont)
O8 = I4I2I1 + I8I1'
O4 = I4I2' + I4I1' + I4'I2I1 O2 = I8'I2'I1 + I2I1'
O1 = I1'
O8
O4
O2
O1
0 0 X 1
0 0 X 0
0 1 X X
0 0 X X
0 0 X 0
1 1 X 0
0 0 X X
1 1 X X
0 1 X 0
0 1 X 0
1 0 X X
0 1 X X
1 1 X 1
0 0 X 0
0 0 X X
1 1 X X
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