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math coprocessor

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math coprocessor
A mathematical circuit that performs high-speed floating point operations. It is generally built into the CPU chip; however, in older PCs, such as the 386 and 486SX, the math coprocessor was an optional, separate chip. Floating point capability is very important to computation-intensive CAD work, and many CAD programs will not operate without it. A spreadsheet may use it if available, but it is not mandatory. See vector processor.
math coprocessor [¦math ′kō‚prä‚ses·ər]
(computer science)
numeric processor extension


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Basically in a 486SX the math coprocessor chip was disabled.
Computing - the Basic Generations of the Early Pcs An Their Legacy by Franklin R. West / Computers and Internet community
The chip will also include four math units (two per Power3 core) based on the math coprocessor that was developed by the Rochester engineers for the AS/400 Muskie PowerPC processor, which was used in the 1995-1996 line of 530 and 53S servers and which is still the fastest math unit ever developed by IBM.
Power4 Design Puts Memory Bandwidth Above All Else >BY Timothy ... by Computergram International
The 486SX lacks the math coprocessor that a 486DX has, but is more reasonably priced.
Glossary of terms for computer "rookies." (Glossary) by Nursing Homes
 
 
 
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