PPT Slide

2 – Combinational Logic

© 1996 Gaetano Borriello

60

I8 I4 I2 I1 O8 O4 O2 O10 0 0 0 0 0 0 1

0 0 0 1 0 0 1 0

0 0 1 0 0 0 1 1

0 0 1 1 0 1 0 0

0 1 0 0 0 1 0 1

0 1 0 1 0 1 1 0

0 1 1 0 0 1 1 1

0 1 1 1 1 0 0 0

1 0 0 0 1 0 0 1

1 0 0 1 0 0 0 0

1 0 1 0 X X X X

1 0 1 1 X X X X

1 1 0 0 X X X X

1 1 0 1 X X X X

1 1 1 0 X X X X

1 1 1 1 X X X X

Design example: BCD increment by 1

block diagram

and

truth table

4-variable K-map for each of the 4 output functions

O1O2O4

O8

I1I2I4

I8

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