Computer Coprocessors

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Coprocessors


Coprocessors

Until recently the mathematical coprocessor named also the arithmetic coprocessor, represented the specialized integrated circuit working in interaction with the central microprocessor. The given microcircuit has been intended only for performance of mathematical operations with a floating point. In all microprocessors Intel from 486DX and above the coprocessor is integrated on a crystal of the basic processor.

The mathematical coprocessor is necessary at job with vector графикой (especially three-dimensional), spreadsheets, packages САПР, special mathematical packages, etc. At job with databases or usual text editors use of the coprocessor does not give appreciable results. He is useless and at job with network operational systems.

The first mathematical coprocessor for personal computers IBM was i8087 companies Intel. Further have followed i80287, i80387, i487SX. Clones of coprocessors Intel issued such firms, as ULSI, AMD, Cyrix (Texas Instruments), IIT, Chips*Technologies. Besides firm Weitek issued coprocessors, программно not compatible with production Intel.

Since processors of the fifth generation (behind exception quickly missed with market NexGen Nx586), the coprocessor became a standard component of a nucleus of the processor and consequently now general purpose coprocessors are not issued.

 


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