PPT Slide

4 – Combinational Logic Design Examples

© 1996 Gaetano Borriello

2s complement addition and subtraction

• Simple addition and subtraction

  • simple scheme makes 2s complement the virtually unanimous choice for integer number systems in computers

24

4

+ 3

7

0100

0011

0111

– 4

+ (– 3)

– 7

1100

1101

11001

4

– 3

1

0100

1101

10001

– 4

+ 3

– 1

1100

0011

1111

Previous slide

Next slide

Back to first slide

View graphic version