S

#### Steven O.

- Jan 1, 1970

- 0

Everything is pretty clear so far, except the concept of a "dual" of a

logical function has me slightly puzzled.

I think it's like this: If I take any true logical equation, and

reverse the operators, and interchange 1s and 0s, (and, do NOT switch

A to A' or vice-versa), the equation I get as a result is still true,

and is the dual of the original -- but the new equation is NOT the

equivalent of the orginal. Is that right?

For example:

A + A' = 1

AA' = 0

Or another example:

A + 1 = 1

A0 = 0

Or, once more:

A + 0 = A

A1 = A

Are each of these pairs, in fact, the dual of each other? Thanks in

advance for all replies.

Steve O.

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