Introduction of Arithmetic Operation

Procedure for the design of combinational circuits are:
A. From the word description of the problem, identify the inputs and outputs and draw a block diagram.
B. Draw the truth table such that it completely describes the operation of the circuit for different combinations of inputs.
C. Simplify the switching expression(s) for the output(s).
D. Implement the simplified expression using logic gates.
E. Write down the switching expression(s) for the output(s).

The basic building blocks of the arithmetic unit in a digital computers are

The flag bits in an ALU is defined as

The design of an ALU is based on

If the two numbers include a sign bit in the highest order position, the bit conditions of interest are the sign of the result, a zero indication and

A digital system consists of _____ types of circuits.

All logic operations can be obtained by means of

In a combinational circuit, the output at any time depends only on the _______ at that time.

If the two numbers are unsigned, the bit conditions of interest are the ______ carry and a possible _____ result.

In a sequential circuit, the output at any time depends only on the input values at that time.