Can you confirm what you mean by this bit?A *
B = AB + A B
What is all that heavy thrashing around with Boolean algebra all about? To prove that A=A and B=B? I cannot understand what you are doing. Anyway, that is a common logic function. Specifically, it is a exclusive NOR (XNOR) gate. http://www.tpub.com/content/neets/14185/css/14185_122.htmIf I understand correctly, what you have is a "custom" operator "*" which takes 2 values, A & B, and performs the following Boolean function on them:
A*B = AB+A'B'
Because he was asked to show that those statements were true. To the uninitiated, it isn't is obvious as it may be to you or me. If he were asked to show if 2x2 was in fact 4, wouldn't you go through some repeated additions to show that it is true?zgozvrm, What is all that heavy thrashing around with Boolean algebra all about?
A truth table or set of truth tables will prove or disprove any logic expression.Because he was asked to show that those statements were true. To the uninitiated, it isn't is obvious as it may be to you or me. If he were asked to show if 2x2 was in fact 4, wouldn't you go through some repeated additions to show that it is true?
Yes, you're absolutely right. But, if I had shown truth tables, surely someone else would've pointed out that it could've been proven using Boolean algebra.zgozvrm
A truth table or set of truth tables will prove or disprove any logic expression.
Ratch