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Triple Negative (Posted on 2004-02-12) Difficulty: 4 of 5
Using only two inverters and an unlimited number of AND and OR gates in a logic circuit, show how to invert an arbitrary number of inputs.

(For instance, if you have four inputs, the circuit will have four outputs that are the inverses of the four inputs)

No Solution Yet Submitted by DJ    
Rating: 4.1250 (8 votes)

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Question re: Classic solution | Comment 8 of 19 |
(In reply to Classic solution by Federico Kereki)

FK (or anyone),

Please help me understand this diagram....

I was looking at the figure 4 in the "classic solution". If one looks at the second major column of gates (from top to bottom reads: Or, Or, And, Or, And, Or, And), there is an input that is shared among three of the 'Or's and one 'And'. I do not see where it is coming from.

Is there an error in this diagram? Or (as is more likely) am I misunderstanding it?

- SK
  Posted by SilverKnight on 2004-02-12 18:25:06

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