7.1 Logic gates and Boolean algebra
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De Morgan's Laws
"not (A and B)" is the same as "(not A) or (not B)" "not (A or B)" is the same as "(not A) and (not B)"
Logic gate
An electronic circuit that performs a Boolean function
Boolean equation
An equation that expresses a Boolean output in terns of boolean inputs
Truth table
a table that shows the result of applying a logical function to all the possible combinations of inputs
Boolean variable
a variable which may only have two discrete possible values.
