
Logic ◾ 67
is the number of inputs into the operator. Each of the operators also has
a technical name that describes the underlying function of the operator.
Figure3.2 gives the arity and technical name for each of the logical opera-
tors. Operators that have an arity of two are known as binary operators and
operators that have an arity of one are known as unary operators. e truth
value that is generated by a logical operator is dependent only on the input(s).
3.2.2.1 Conjunction (AND)
For the binary operators there are only two inputs and since each of these
two inputs has only two possible values there are only four situations
that ...