Introductions

By now we have discussed the instruction sets and register organization followed by a discussion on micro-operations and instruction execution. In this unit, we will first discuss  the ALU organization. Then we will discuss the? floating point ALU and arithmetic co-processors, which are commonly used for floating point computations.

Objectives

After going through this unit, you will be able to:

• describe the basic organisation of ALU;
• discuss the requirements of a floating point ALU;
• define the term arithmetic coprocessor; and
• create simple arithmetic logic circuits.