In the digital computer world there are currently different types of
categories, which are based on price and performance. Two of these are:
Personal Computer (PC’s)
A PC is a relative low-cost machine usually of desktop size (laptops,
notebooks and palmtops are mush smaller).
Main Frames
A mainframe is a large expensive machine with the capability of serving
the needs of major business enterprises, government departments and
scientific research establishments (the largest and fastest of these are
called supercomputers).
Source/Further Reading: NOUN - http://www.nou.edu.ng/uploads/NOUN_OCL/pdf/SST/CIT%20101.pdf
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