qdos

Computing Dictionary

QDOS definition

operating system
The Sinclair QL's proprietary operating system. The origin of the name is uncertain (a weak pun on kudos, perhaps, as Unix was on Multics). There was another OS around from the birth of personal computers called Q.D.O.S. - Quick And Dirty Operating System. QDOS might also stand for QL Data/Disk/Drive/Device Operating System.
QDOS did the usual OS sorts of things, as well as multitasking. It was unusual in several ways. It treated all devices (serial ports, mouse ports, screen, microdrive, disk drive, keyboard, etc.) uniformly, so you could print a text file direct to disk or save a binary to the screen for example.
Also logical channels could be assigned to particular physical devices. Output directed to a channel would go to the appropriate in/output. This also meant you could have many windows on screen (the QL booted up from internal ROMs with 3 windows - command line, output and program listing) all independent to some extent. Channels could be redirected without affecting the way the process sent or received the data.
(1996-07-22)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
Cite This Source
Explore Dictionary.com
Previous Definition: qdjanus
Next Definition: qe
Words Near: qdos
More from Thesaurus.com
Synonyms and Antonyms for qdos
More from Reference.com
Search for articles containing qdos
More from Dictionary.com Translator
Dictionary.com Word FAQs

Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.

Nearby Words
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT

;