Logical '''AND''' is a logical operation which has the following truth table:

	* False AND False = False
	* False AND True  = False
	* True  AND False = False
	* True  AND True  = True

More generally:
	* AND is true only when all of its arguments are true 
	* AND is false if any of its arguments are false.

This applies for any number of arguments to AND.  

Stated another way (for C and C++ programmers, AND = &&)

	* non-zero && non-zero = true
	* zero && anything = false

Of course, in C, && is not LogicalAnd but rather ShortCircuitAnd (the second argument is not evaluated unless the first argument is True).

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Logical AND is not to be confused with the BitwiseAnd operator.  BitwiseAnd operations are often used as a bit mask to clear certain bits without affecting others. For example, 00001111 AND 10101010 results in 00001010.  (This was confusing when used in Commodore BASIC, because non-programmers think "and" means "plus":  POKE 1,PEEK(1) AND 251 would clear bit 2, not add four.)
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For those of us who need to use ThreeValuedLogic, Logical ''and'' has the following ''additional'' truth values:

	* False and Unknown = False
	* True and Unknown  = Unknown
	* Unknown and Unknown = Unknown
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CategoryLogic