Chapter 86 of 2364 min read

Logic gates

Why this is asked: NAND and NOR are each called a universal gate because either one alone, used repeatedly, can build every other basic gate — AND, OR and NOT included — which is why real circuits are so often built almost entirely from just one of them.

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Test yourself

•The output ( $Y$ ) of the given logic implementation is similar to the output of a/an _____ gate.
•A logic circuit provides the output $Y$ as per the following truth table:
A B Y
0 0 1
0 1 0
1 0 1
1 1 0
The expression for the output $Y$ is:
•The output ( $Y$ ) of the given logic gate circuit is similar to the output of a/an:

A	B	Y
0	0	1
0	1	0
1	0	1
1	1	0

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