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- ORDVAC abstract "The ORDVAC or Ordnance Discrete Variable Automatic Computer, an early computer built by the University of Illinois for the Ballistics Research Laboratory at Aberdeen Proving Ground, was based on the IAS architecture developed by John von Neumann, which came to be known as the von Neumann architecture. The ORDVAC was the first computer to have a compiler. ORDVAC passed its acceptance tests on March 10, 1952 at Aberdeen Proving Ground in Maryland. Its purpose was to perform ballistic trajectory calculations for the US Military.Unlike the other computers of its era, the ORDVAC and ILLIAC I were twins and could exchange programs with each other. The later SILLIAC computer was a copy of the ORDVAC/ILLIAC series. J. P. Nash of the University of Illinois was a developer of both the ORDVAC and of the university's own identical copy, the ILLIAC, which was later renamed the ILLIAC I. Donald B. Gillies assisted in the checkout of ORDVAC at Aberdeen Proving Ground. After ORDVAC was moved to Aberdeen, it was used remotely by telephone by the University of Illinois for up to eight hours per night. It was one of the first computers to be used remotely and probably the first to routinely be used remotely.The ORDVAC used 2178 vacuum tubes. Its addition time was 72 microseconds and the multiplication time was 732 microseconds. Its main memory consisted of 1024 words of 40 bits each, stored using Williams tubes. It was a rare asynchronous machine, meaning that there was no central clock regulating the timing of the instructions. One instruction started executing when the previous one finished.ORDVAC and its successor at Aberdeen Proving Ground, BRLESC, used their own unique notation for hexadecimal numbers. Instead of the sequence A B C D E F universally used today, the digits ten to fifteen were represented by the letters K S N J F L (King Sized Numbers Just for Laughs), corresponding to the teleprinter characters on five-track paper tape.".
- ORDVAC thumbnail Ordvac.jpg?width=300.
- ORDVAC wikiPageExternalLink ordvac.
- ORDVAC wikiPageID "195403".
- ORDVAC wikiPageLength "3880".
- ORDVAC wikiPageOutDegree "33".
- ORDVAC wikiPageRevisionID "659827873".
- ORDVAC wikiPageWikiLink Aberdeen_Proving_Ground.
- ORDVAC wikiPageWikiLink Asynchronous_circuit.
- ORDVAC wikiPageWikiLink BRLESC.
- ORDVAC wikiPageWikiLink Ballistic_Research_Laboratory.
- ORDVAC wikiPageWikiLink Ballistics_Research_Laboratory.
- ORDVAC wikiPageWikiLink Bit.
- ORDVAC wikiPageWikiLink Category:Early_computers.
- ORDVAC wikiPageWikiLink Category:IAS_architecture_computers.
- ORDVAC wikiPageWikiLink Category:United_States_Army_equipment.
- ORDVAC wikiPageWikiLink Category:Vacuum_tube_computers.
- ORDVAC wikiPageWikiLink Compiler.
- ORDVAC wikiPageWikiLink Computer.
- ORDVAC wikiPageWikiLink Computer_data_storage.
- ORDVAC wikiPageWikiLink Donald_B._Gillies.
- ORDVAC wikiPageWikiLink Hexadecimal.
- ORDVAC wikiPageWikiLink History_of_computing_hardware.
- ORDVAC wikiPageWikiLink IAS_machine.
- ORDVAC wikiPageWikiLink ILLIAC_I.
- ORDVAC wikiPageWikiLink ILLIAC_II.
- ORDVAC wikiPageWikiLink ILLIAC_III.
- ORDVAC wikiPageWikiLink ILLIAC_IV.
- ORDVAC wikiPageWikiLink John_von_Neumann.
- ORDVAC wikiPageWikiLink List_of_vacuum_tube_computers.
- ORDVAC wikiPageWikiLink Microsecond.
- ORDVAC wikiPageWikiLink Microseconds.
- ORDVAC wikiPageWikiLink Primary_storage.
- ORDVAC wikiPageWikiLink Punched_tape.
- ORDVAC wikiPageWikiLink SILLIAC.
- ORDVAC wikiPageWikiLink Teleprinter.
- ORDVAC wikiPageWikiLink University_of_Illinois_at_Urbana-Champaign.
- ORDVAC wikiPageWikiLink University_of_Illinois_at_Urbana–Champaign.
- ORDVAC wikiPageWikiLink Vacuum_tube.
- ORDVAC wikiPageWikiLink Von_Neumann_architecture.
- ORDVAC wikiPageWikiLink Williams_tube.
- ORDVAC wikiPageWikiLink Word_(computer_architecture).
- ORDVAC wikiPageWikiLink Word_(data_type).
- ORDVAC wikiPageWikiLink File:Ordvac.jpg.
- ORDVAC wikiPageWikiLinkText "ORDVAC".
- ORDVAC hasPhotoCollection ORDVAC.
- ORDVAC wikiPageUsesTemplate Template:Reflist.
- ORDVAC subject Category:Early_computers.
- ORDVAC subject Category:IAS_architecture_computers.
- ORDVAC subject Category:United_States_Army_equipment.
- ORDVAC subject Category:Vacuum_tube_computers.
- ORDVAC type Class.
- ORDVAC type Computer.
- ORDVAC comment "The ORDVAC or Ordnance Discrete Variable Automatic Computer, an early computer built by the University of Illinois for the Ballistics Research Laboratory at Aberdeen Proving Ground, was based on the IAS architecture developed by John von Neumann, which came to be known as the von Neumann architecture. The ORDVAC was the first computer to have a compiler. ORDVAC passed its acceptance tests on March 10, 1952 at Aberdeen Proving Ground in Maryland.".
- ORDVAC label "ORDVAC".
- ORDVAC sameAs ORDVAC.
- ORDVAC sameAs ORDVAC.
- ORDVAC sameAs ORDVAC.
- ORDVAC sameAs m.01brr8.
- ORDVAC sameAs ORDVAC.
- ORDVAC sameAs Q2917691.
- ORDVAC sameAs Q2917691.
- ORDVAC wasDerivedFrom ORDVAC?oldid=659827873.
- ORDVAC depiction Ordvac.jpg.
- ORDVAC isPrimaryTopicOf ORDVAC.