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logic gates

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Logic Gates

Logic gates operate on boolean to help analyse them. They are the basis upon which a great deal of electronic equipment is based.

NOT Gate
Turns true to false, and vice versa.

NOT ture = false
NOT false = true

AND Gate
Only gives true if both values are true.

false AND false = false
true AND false = false
false AND true = false
true AND true = true

OR Gate
Gives true if either or both of the values are true.

false OR false = false
true OR false = true
false OR true = true
true OR true = true

XOR (eXclusive OR) Gate
Gives true if either, but not both of the values are true.

false XOR false = false
true XOR false = true
false XOR true = true
true XOR true = false

Apparently, you can make any other gate out of NAND (NOT AND) gates. But I'm not a hardware guy so they could be complete...uh...excretement.
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