Conversion between forms (con’t)

• Example: AND/OR network to NOR/NOR

A

B

C

D

Z

conserve

"bubbles"

NOR

NOR

NOR

A'

B'

C'

D'

Z

Z = { [(A'+B')'+(C'+D')' ]' }'

= { (A'+B')(C'+D') }'

= (A'+B')'+(C'+D')'

= AB+CD

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