What is Extended Memory?
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by Dinesh Thakur

In the vast majority of pcs sold these days, extended memory is the type of memory over and above the first megabyte (which is the conventional memory). A PC must have at least an 80286 microprocessor (meaning that an 80386 or 80486 will work, too) to use extended memory. But even then, DOS doesn't recognize extended memory-to use it, your software has to incorporate a DOS extender.

Extended memory isn't the same thing as expanded memory—these two terms have specific meanings, and you have to know which one to ask for. 

Dinesh Thakur is a Technology Columinist and founder of Computer Notes and Technology Motivation. Turn Mobile View Off