Reviewing problem !!

Thread Starter

karantum

Joined Sep 29, 2008
1
I have a upcoming test regarding circuits and one of the things covered was a 4x4 bit binary circuit.

I saw the wiki: http://en.wikipedia.org/wiki/Binary_multiplier

but I can't figure out what is wrong with it (the comment says something is)

Can anyone tell me (or redraw the circuit if you have a couple minutes) and explain what is wrong with it?

:confused:
 
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