TSR program - meaning and definition. What is TSR program
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What (who) is TSR program - definition

COMPUTER PROGRAM THAT USES A SYSTEM CALL TO RETURN CONTROL TO THE OS, AS THOUGH THE PROGRAM HAS QUIT, BUT STAYS RESIDENT IN MEMORY SO IT CAN BE REACTIVATED BY A HARDWARE OR SOFTWARE INTERRUPT, IN ORDER TO WORK AROUND THE OS’S LACK OF MULTITASKING
TSR (computing); Terminate and stay resident; Terminate-and-Stay-Resident program; Terminate-and-Stay Resident Program; RAM resident; Memory resident; TSR program; Terminate-and-stay resident; Terminate-and-Stay-Resident; Terminate & Stay Resident; TSR file viruses; Terminate-and-Stay-Resident Program; Alternate Multiplex Interrupt Specification; Terminate and Stay Resident; Terminate and stay resident program; Terminate-and-stay-resident; Alternate multiplex interrupt specification; IBM Interrupt Sharing Protocol; IBM interrupt sharing protocol; Interrupt Sharing Protocol; Interrupt sharing protocol; Memory-resident program

TSR, Inc.         
FORMER COMPANY, PUBLISHER OF "DUNGEONS & DRAGONS"
Tactical Studies Rules; TSR logos; TSR, Incorporated; T$R; TSR, Inc; TSR Inc.; TSR Hobbies; TSR novels; TSR, inc.; TSR Inc; TSR Books; TSR (company)
TSR, Inc. was an American game publishing company, best known as the original publisher of Dungeons & Dragons (D&D).
Terminate-and-stay-resident program         
A terminate-and-stay-resident program (commonly TSR) is a computer program running under DOS that uses a system call to return control to DOS as though it has finished, but remains in computer memory so it can be reactivated later. This technique partially overcame DOS's limitation of executing only one program, or task, at a time.
Terminate and Stay Resident         
(TSR) A type of DOS utility which, once loaded, stays in memory and can be reactivated by pressing a certain combination of keys.

Wikipedia

Terminate-and-stay-resident program

A terminate-and-stay-resident program (commonly TSR) is a computer program running under DOS that uses a system call to return control to DOS as though it has finished, but remains in computer memory so it can be reactivated later. This technique partially overcame DOS's limitation of executing only one program, or task, at a time. TSRs are used only in DOS, not in Windows.

Some TSRs are utility software that a computer user might call up several times a day, while working in another program, using a hotkey. Borland Sidekick was an early and popular example of this type. Others serve as device drivers for hardware that the operating system does not directly support.