A version of the AN/USQ-20 for use by the other military services and NASA was designated the UNIVAC 1206. Another version, designated the G-40, replaced the vacuum tube UNIVAC 1104 in the BOMARC Missile Program.
The machine was the size and shape of an old-fashioned double-door refrigerator, about six feet tall (roughly 1.80 meters).
Instructions were represented as 30-bit words in the following format:
f 6 bits function code j 3 bits jump condition designator k 3 bits partial word designator b 3 bits which index register to use y 15 bits operand address in memory
Numbers were represented as 30-bit words. This allowed for five 6-bit alphanumeric characters per word.
^ David L. Boslaugh. "IEEE Global History Network - First-Hand:Testing the Naval Tactical Data System - Chapter 5 of the Story of the Naval Tactical Data System". Retrieved March 11, 2021.
^ "Computer History Museum:Managing the Threat". Retrieved March 11, 2021.
^ "UNIVAC-NTDS historical notes". Retrieved March 11, 2021.
^ David L. Boslaugh. "IEEE Global History Network - First-Hand:Moving the Firing Key to NTDS - Chapter 6 of the Story of the Naval Tactical Data System". Retrieved March 11, 2021.
External links
UNIVAC-NTDS: UNIVAC 1206, AN/USQ-20 – From the Antique Computer website
February 09, 2023
this, article, includes, list, references, related, reading, external, links, sources, remain, unclear, because, lacks, inline, citations, please, help, improve, this, article, introducing, more, precise, citations, march, 2013, learn, when, remove, this, temp. This article includes a list of references related reading or external links but its sources remain unclear because it lacks inline citations Please help to improve this article by introducing more precise citations March 2013 Learn how and when to remove this template message The AN USQ 20 or CP 642 1 2 3 or Naval Tactical Data System NTDS was designed as a more reliable replacement for the Seymour Cray designed AN USQ 17 with the same instruction set The first batch of 17 computers were delivered to the Navy starting in early 1961 4 The AN USQ 20 computer A version of the AN USQ 20 for use by the other military services and NASA was designated the UNIVAC 1206 Another version designated the G 40 replaced the vacuum tube UNIVAC 1104 in the BOMARC Missile Program Contents 1 Technical 2 See also 3 References 4 External linksTechnical EditThe machine was the size and shape of an old fashioned double door refrigerator about six feet tall roughly 1 80 meters Instructions were represented as 30 bit words in the following format f 6 bits function code j 3 bits jump condition designator k 3 bits partial word designator b 3 bits which index register to use y 15 bits operand address in memory Numbers were represented as 30 bit words This allowed for five 6 bit alphanumeric characters per word The main memory was 32 768 words of core memory The available processor registers were one 30 bit arithmetic A register a contiguous 30 bit Q register total of 60 bits for the result of multiplication or the dividend in division seven 15 bit index B registers note register B0 is always zero See also EditCMS 2 List of UNIVAC products History of computing hardware Military computersReferences Edit David L Boslaugh IEEE Global History Network First Hand Testing the Naval Tactical Data System Chapter 5 of the Story of the Naval Tactical Data System Retrieved March 11 2021 Computer History Museum Managing the Threat Retrieved March 11 2021 UNIVAC NTDS historical notes Retrieved March 11 2021 David L Boslaugh IEEE Global History Network First Hand Moving the Firing Key to NTDS Chapter 6 of the Story of the Naval Tactical Data System Retrieved March 11 2021 External links EditUNIVAC NTDS UNIVAC 1206 AN USQ 20 From the Antique Computer website Retrieved from https en wikipedia org w index php title AN USQ 20 amp oldid 1135035622, wikipedia, wiki, book, books, library,
