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Home » Fundamental » Computer » What is coprocessor?
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What is coprocessor?

By Dinesh Thakur

A co-processor is a chip that works side-by-side with the computer’s main processor (the chip called the central processing unit, or CPU). The co-processor handles some of the more specialized tasks, such as doing math calculations or displaying graphics on the screen, thereby taking some of the work load off the main processor so it can go on with the business of directing and keeping order over the whole show. A co-processor is installed to reduce the burden on a computer’s CPU and thus free it for more general duties such as transferring data and handling multiple tasks. 

Math co-processors, for example, are specialized for performing calculations on numbers, and they are much faster at it than the main processor in your computer. So if you have a program that does many math calculations, such as a spreadsheet or a CAD program, then adding a math co-processor to your system can sometimes remarkably improve your computing speed.

There are video co-processors that are used to speed up the display of graphics on your screen. Again, if you use any graphics-based application, including Windows, then adding a video co-processor to your system on an add-in board can speed up your system even more than buying a faster computer.

One catch, however, with any kind of co-processor, is that the software you use must be written so that it knows the co-processor is there, otherwise your system will not recognize its existence and won’t be able to use it.

A co-processor may be designed to work just with a particular type of CPU, in which case its instructions can be included in the main program and are passed on to the co-processor by the CPU as it encounters them. In other cases, the co-processor may require its own separate program and program memory, and communicates with the CPU by interrupts or message passing via a shared memory region.

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About Dinesh Thakur
Dinesh ThakurDinesh Thakur holds an B.C.A, MCDBA, MCSD certifications. Dinesh authors the hugely popular Computer Notes blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps.

Dinesh Thakur is a Freelance Writer who helps different clients from all over the globe. Dinesh has written over 500+ blogs, 30+ eBooks, and 10000+ Posts for all types of clients.


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