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The difference between positive and negative logic

2017-08-29View Original

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I can understand positive and negative logic, but regarding this three-to-two approach, I drew diagrams several times and felt that the positive and negative logic of three-to-two can be used interchangeably. For example, in an inverse logic circuit, there is a 3-to-2 selector; by replacing the inverse logic 3-to-2 selector with a positive logic one, the circuit seems to function properly as well”
Reply #22017-08-29
Do not focus on the application of specific functional blocks within logical circuits; whether it’s 3-to-2 or something else, it is possible to meet the functional requirements. It’s mainly about figuring out when to use positive logic and when to use negative logic.
Reply #32017-08-29
(A+B)(B+C)(A+C) = AB + BC + AC; that’s correct, logically it’s the same thing!
Reply #42017-08-30
It’s now fail-safe, so inverse logic is used more often
Reply #52017-08-31
OP, where did you get this information from?

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