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Test Your EQ #144— Answer

Answer 4
Interestingly enough, the actual gate count is exactly linear, or O(N), when done entirely with 3:2 full adders:

 
Number of inputs Full adders for adding up Full adder equivalents for magnitude compare Total full adders
3 1 2 3
7 4 3 7
15 11 4 15
31 26 5 31

Contributor: Dave Tweed

Published: July-2002

   

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