The important terms we are discussing in this section are

1. Logic Expression - a mathematical formula consisting of logical operators and variables.


2. Logic Operator - a function that gives a well defined output according to switching algebra.


3. Logic Variable - a symbol representing the two possible switching algebra values of 0 and 1.


4. Logic Literal - the values 0 and 1 or a logic variable or it's complement.

The analysis means a digital circuit is given and we are asked to determine its input-output relationship (its purpose, operation, what it does). One studies the circuit and then states the input-output relationship of the circuit in text or on a truth table or on an operation table or on an operation diagram. The synthesis means an input-output relationship is given and we are asked to design the digital circuit. The input-output relationship is a very crucial component of digital circuit study. Complex digital circuits are blocks are analyzed/designed individually and finally the whole circuit is analyzed/designed.