AOS


Also found in: Financial, Acronyms, Idioms, Wikipedia.

AOS

(1)
/aws/ (East Coast), /ay-os/ (West Coast) A PDP-10 instruction that took any memory location and added 1 to it. AOS meant "Add One and do not Skip". Why, you may ask, does the "S" stand for "do not Skip" rather than for "Skip"? Ah, here was a beloved piece of PDP-10 folklore. There were eight such instructions: AOSE added 1 and then skipped the next instruction if the result was Equal to zero; AOSG added 1 and then skipped if the result was Greater than 0; AOSN added 1 and then skipped if the result was Not 0; AOSA added 1 and then skipped Always; and so on. Just plain AOS didn't say when to skip, so it never skipped.

For similar reasons, AOJ meant "Add One and do not Jump". Even more bizarre, SKIP meant "do not SKIP"! If you wanted to skip the next instruction, you had to say "SKIPA". Likewise, JUMP meant "do not JUMP"; the unconditional form was JUMPA. However, hackers never did this. By some quirk of the 10's design, the JRST (Jump and ReSTore flag with no flag specified) was actually faster and so was invariably used. Such were the perverse mysteries of assembler programming.

AOS

(2)
/A-O-S/ or /A-os/ A Multics-derived operating system supported at one time by Data General.

A spoof of the standard AOS system administrator's manual ("How to Load and Generate your AOS System") was created, issued a part number, and circulated as photocopy folklore; it was called "How to Goad and Levitate your CHAOS System".

AOS

(3)
Algebraic Operating System, in reference to those calculators which use infix operators instead of postfix notation.

AOS

(Alternative Operator Services) Operator services provided by a third-party organization. See operator services.
References in periodicals archive ?
During 2011, AOS repaired a total of 11 jack-ups from the following operators: Rowan Drilling, Saudi Aramco, Ensco, ONGC, Transocean, Saipem and Arab Drilling Co.
AOS Firewall: Protects the user by detecting and blocking unauthorized intrusions and hacking attempts and preventing the leakage of personal information.
As a member of the behavioral health task force, ABH is working with AOS to link veterans and their families to quality behavioral health services.
Michael Colacino, Studley president, commented, "We are delighted to associate ourselves with AOS in order to form AOS/Studley.
So far, deployment and separation top the list of issues callers need assistance with, said Ron White, program director at Ceridian, the company that operates AOS.
The recent questionnaire sent out by the American Neurotology Society (ANS) shows a substantial majority vote against this subspecialty certification examination because of some of the concerns that the ABOto expressed in this recent communication, as well as some expressed in my response to the AOS [above].
Impact's products are distributed via value-added partnerships with companies such as AOS, BestSolutions, Diversified Marketing Consultants, Galaxy Scientific, Digital River, Morningstar Systems, and Tensor Data.
In 2001, we revised the admission criteria for the AOS unit to include a minimental status exam (MMSE) score of 25 or above, regular group activities participation, and no unpredictable, nonphysical illness-related disturbing behaviors.
Incorporated in 1988, AOS has been delivering smart imaging systems that detect and recognize things for the past 25 years.
As per the agreement, AOS would own 51% of the equity in the facility and will be contributing its existing assembly and test equipment along with certain intellectual property (IP) needed in the operation of the factory.
AOS is the product of Vision, Ambition and Dedication, managed by veterans having a thorough experience of business development, sales, purchasing, operation, management, warehousing, in providing services to land and offshore oilfield services and to various E&P companies.
As water passes the kill zone, (the area in which this extremely high oxidation potential is being generated), contaminants are rapidly dismantled and destroyed as the water passes through the AOS filter.