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Thursday, June 30, 2011

Computer Architecture # 03 : Arithmetic: OVERVIEW (1)

In the previous chapter we explored a few ways that numbers can be represented in a digital computer, but we only briefly touched upon arithmetic operations that can be performed on those numbers. In this chapter we cover four basic arithmetic operations: addition, subtraction, multiplication, and division. We begin by describing how these four operations can be performed on fixed point numbers, and continue with a description of how these four operations can be performed on floating point numbers. 

Some of the largest problems, such as weather calculations, quantum mechanical simulations, and land-use modeling, tax the abilities of even today’s largest computers. Thus the topic of high-performance arithmetic is also important. We conclude the chapter with an introduction to some of the algorithms and techniques used in speeding arithmetic operations.

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