octal adder

161

01:23:04

Adds 8 binary inputs, display results in a nibble (4 bit sequence).  Enter bits on left, sum is displayed on right.  Top LED is most significant bit (=8), then 4, 2 and 1 beneath.  Uses mostly half adders, and two full adders.  Gate delay is really slow.  There are prob. more efficient ways, but I just wanted to puzzle out the gate logic myself.

published 9 years ago

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