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(computer science)


(operating system)

1. IBM's Tape Operating System.

2. The operating system of the Atari ST range of computers. This range included the 512ST, 1040ST and the F, FM and E variations (e.g.1040STE). Later, 32-bit machines (TT, Falcon030 and MegaSTE) were developed using a new version of TOS, called MultiTOS which was based on MinT.

TOS went through several revisions starting initially as a derivative of CP/M, but developing into a remarkably complete and flexible operating system. Features include: a flat memory model, MS-DOS-compatible disk format and support for MIDI and SCSI (in later versions). TOS was designed to run Atari's version of the GEM GUI.

There is some argument as to what TOS stands for, the main candidates being "Tramiel Operating System" (named after Atari's head at the time) or simply "The Operating System".

3. <networking> Terms Of Service.

4. Star Trek The Original Series as opposed to ST-TNG or ST-DS9.


(1) See terms of service.

(2) (Type Of Service) A field in an IP packet (IP datagram) that is used for quality of service (QoS). The TOS field is 8 bits, broken into five subfields.

(3) (Tape Operating System) An OS for IBM's System/360 Model 30 in the mid-1960s. It was superseded by DOS/360.
References in periodicals archive ?
In our case, TOS resulted from intraoperative malpositioning of the Knowles pin causing vascular injury because these procedures were not performed exactly.
In the same study (28), similar with our results, no significant difference was reported between ME patients and HCs in terms of serum TOS and OSI levels.
In assessing the value of TOS, the question is: What is the importance of an organization that (a) publishes a steady stream of crystal-clear, fact-based, well-reasoned, life-serving articles on the crucial issues and concerns of the day--and (b) disseminates these articles to countless people who otherwise would not read such material?
Of the 280 patients, TOS was given to 160 patients (57.
1,2] Bony abnormalities have been well described as a cause or contributing factor in neurogenic TOS.
Some authors claimed that deceleration of ulnar motor nerve conduction across the thoracic outlet is characteristic in patients with TOS, however, subsequent studies showed normal velocities across the Erb's point-axilla and did not correspond with this hypothesis (1).
Surgical treatment for TOS is considered a last resort but in the case of arterial TOS it is nearly always necessary.
The more relevant participation of bio-pharma was based on drugs (more than 70 per cent) and, numerically, on TOS for molecule research (31 from 86).
The first Saturday session of TOS was held in a large seminar room of the university library, a building flanked with ample parking space.
The Spanish government acted quickly to remove all suspect oil from the market, but TOS eventually affected at least 20,000 people and caused more than 300 deaths.
Purpose: The purpose of this study was to determine the prevalence of TOS among a convenience sample of practitioners.