9 cpus with large instruction set variable length

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Unformatted text preview: s instruction set. 6. As the instructions are interpreted and executed by the CPU, there is a movement of information between the various units of the computer system. In order to handle this process satisfactorily and to speed up the rate of information transfer, the computer uses a number of special memory units called registers. These registers are used to hold information on a temporary basis and are part of the CPU (not main memory).148 I Foundations of Computing 7. The speed of a processor is directly related to the computer's clock speed, which is the number of pulses, produced each second by the built-in electronic clock. This clock speed is measured in megahertz (or MHz.). 8. Although the processing speed of personal computers is generally measured in MHz, the processing speed of workstations, mini computers, and mainframe systems is often measured in MIPS (Millions of Instructions Per Second) or BIPS (Billions of Instructions Per Second), and that of supercomputers is measured in MFLOPS (Millions of Floating Point Operations Per Second) or GFLOPS (gigaflops which refers to a billion FLOPS). 9. CPUs with large instruction set, variable-length instructions, and a variety of addressing modes are said to employ CISC (Complex Instruction Set Computer) architecture. 10. CPUs with a small instruction set, fixed-length instructions, and reduced references to memory to retrieve operands are said to employ RISC (Reduced Instruction Set Computer) architecture. 11. The Explicitly Parallel Instruction Computing (EPIC) technology is fast emerging as the technology for next-generation processors. The three key features of EPIC technology targeted towards improved performance as compared to today's processors are explicit parallelism, predication and speculation. 12. Every computer has a temporary storage area that is built into the computer hardware and in which instructions and data of a program reside mainly when the program is being executed by the CPU. This storage space is known as primary storage, ma...
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This document was uploaded on 04/07/2014.

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