PPT Slide

3 – Combinational Logic Implementation

© 1996 Gaetano Borriello

Conversion between forms

• Convert from networks of ANDs and ORs to networks of NANDs and NORs

  • introduce appropriate inversions ("bubbles")

• Each introduced "bubble" must be matched by a corresponding "bubble"

  • conservation of inversions
  • do not alter logic function

• Example: AND/OR to NAND/NAND

8

A

B

C

D

Z

A

B

C

D

Z

NAND

NAND

NAND

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