IAS

IAS may stand forIndian Academy of SciencesIndian Administrative ServiceIndicated airspeedIdeal Adsorbed Solution, thermodynamic theory of adsorption of Minka and MyersInternational Accounting StandardsInternational Adsorption SocietyInternational Affairs Specialist United States Air Force Officer Program emphasizing international understanding, cultural expertise, and adaptive language skillsInternational AIDS Society, an organization of physicians, scientists, and public health workers who treat HIV/AIDSInternational Atherosclerosis SocietyInstitute for Advanced StudyThe IAS computer built at the Institute for Advanced StudyInstitute of African Studies (University of Bayreuth)Institute for Anarchist StudiesInstitute of the Aeronautical SciencesInternational Association of ScientologistsInternational Association of SedimentologistsInteractive Application System, a variant of the RSX-11 operating systemInternet Authentication ServiceInternet Application Server an application server from Oracle CorporationIntelligent Application SwitchIntelligence and Analysis Service, Japan's intelligence agencyIntegrated Anti-Swimmer System, an ultrasound system to detect submerged diversIAS Internet Slang- An expression used over internet to show amusementIslamic World Academy of Sciences, an organization promoting science and technology in the Muslim WorldIaşi International Airport in Iaşi, Romania, designated by IATA airport code IAS
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v. go, leave; wend; run

(pl. )
of Pathopoela
  

1. <computer> The first modern computer. It had main registers, processing circuits, information paths within the central processing unit, and used Von Neumann's fetch-execute cycle.
The IAS machine's basic unit of information was a 40-bit word and the memory had 4096 words. A word stored in memory could represent either an instruction or data. Each IAS instruction was twenty bits long, so that two instructions could be stored in each 40-bit memory location. Each instruction consisted of an 8-bit operation code and a 12-bit address that could identify any of 2^12 locations that may be used to store an operand of the instruction.
The CPU consisted of a data processing unit and a program control unit. It contained various processing and control circuits along with a set of high-speed registers for the temporary storage of instructions, memory addresses, and data.
The main actions specified by instructions were performed by the arithmetic-logic circuits of the data processing unit. An electronic clock circuit was used to generate the signals needed to synchronise the operation of the different parts of the system.
[Who? Where? When? Implemented using what?]
2. Immediate Access Storage.
(2003-10-24)

Instrument Air System