TSR

TSR definition - telecom
A utility program that loads and remains in random access memory (RAM) even when not running, in order to be available instantly when required.TSR programs were popular as extensions to DOS, but largely have been replaced by more sophisticated modules in more recent operating systems (OSs.) See also DOS, OS, program, RAM, and utility.

Webster's New World Telecom Dictionary Copyright © 2008 by Wiley Publishing, Inc., Indianapolis, Indiana.
Used by arrangement with John Wiley & Sons, Inc.

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