A variable is a quantity which can change by taking on the value of any constant in the
numbering system. At one specific time, a variable can have the value of one constant a
later time, it can take on the value of some other constant. Since there are only two
possible constants in Boolean algebra, a variable can take on either of only two possible
states, 0 or 1.
In Boolean algebra, the two possible values for any variable are
The two possible constants used in Boolean algebra are
a. 00 and 10.
b. binary and base 2.
c. true and false.
d. 0 and 1.
A truth table is a chart of a logic function which lists all possible combinations of input
values and indicates the true output value for each input combination.