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- Q1093952 subject Q6816476.
- Q1093952 subject Q7023431.
- Q1093952 subject Q8870115.
- Q1093952 subject Q8893075.
- Q1093952 abstract "The BRLESC I (Ballistic Research Laboratories Electronic Scientific Computer) was a first-generation electronic computer built by the United States Army's Ballistic Research Laboratory (BRL) at Aberdeen Proving Ground with assistance from the National Bureau of Standards (now the National Institute of Standards and Technology), and was designed to take over the computational workload of EDVAC and ORDVAC, which themselves were successors of ENIAC. It began operation in 1962. BRLESC was designed primarily for scientific and military tasks requiring high precision and high computational speed, such as ballistics problems, army logistical problems, and weapons systems evaluations. It contained 1727 vacuum tubes and 853 transistors and had a memory of 4096 72-bit words. BRLESC employed punched cards, magnetic tape, and a magnetic drum as input-output devices, which could be operated simultaneously.It was capable of five million (bitwise) operations per second. A fixed point addition took 5 microseconds, a floating-point addition took 5 to 10 microseconds, a multiplication (fixed or floating-point) took 25 microseconds, and a division (fixed or floating-point) took 65 microseconds. (These times are including the memory access time, which was 4-5 microseconds.)BRLESC and its predecessor, ORDVAC, 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, corresponding to the teletypewriter characters on five-track paper tape.".
- Q1093952 thumbnail BRLESC-1_computer.jpg?width=300.
- Q1093952 wikiPageExternalLink BRL64.html.
- Q1093952 wikiPageExternalLink U-S-Ord-61-ch05.html.
- Q1093952 wikiPageExternalLink hist.html.
- Q1093952 wikiPageExternalLink chap5.html.
- Q1093952 wikiPageWikiLink Q117879.
- Q1093952 wikiPageWikiLink Q169399.
- Q1093952 wikiPageWikiLink Q176691.
- Q1093952 wikiPageWikiLink Q177777.
- Q1093952 wikiPageWikiLink Q183414.
- Q1093952 wikiPageWikiLink Q184631.
- Q1093952 wikiPageWikiLink Q193663.
- Q1093952 wikiPageWikiLink Q2917691.
- Q1093952 wikiPageWikiLink Q319506.
- Q1093952 wikiPageWikiLink Q3574371.
- Q1093952 wikiPageWikiLink Q4851787.
- Q1093952 wikiPageWikiLink Q5339.
- Q1093952 wikiPageWikiLink Q625642.
- Q1093952 wikiPageWikiLink Q649900.
- Q1093952 wikiPageWikiLink Q66196.
- Q1093952 wikiPageWikiLink Q66221.
- Q1093952 wikiPageWikiLink Q66241.
- Q1093952 wikiPageWikiLink Q6816476.
- Q1093952 wikiPageWikiLink Q7023431.
- Q1093952 wikiPageWikiLink Q82828.
- Q1093952 wikiPageWikiLink Q834849.
- Q1093952 wikiPageWikiLink Q842015.
- Q1093952 wikiPageWikiLink Q8805.
- Q1093952 wikiPageWikiLink Q8870115.
- Q1093952 wikiPageWikiLink Q8893075.
- Q1093952 wikiPageWikiLink Q908463.
- Q1093952 wikiPageWikiLink Q9212.
- Q1093952 comment "The BRLESC I (Ballistic Research Laboratories Electronic Scientific Computer) was a first-generation electronic computer built by the United States Army's Ballistic Research Laboratory (BRL) at Aberdeen Proving Ground with assistance from the National Bureau of Standards (now the National Institute of Standards and Technology), and was designed to take over the computational workload of EDVAC and ORDVAC, which themselves were successors of ENIAC. It began operation in 1962.".
- Q1093952 label "BRLESC".
- Q1093952 depiction BRLESC-1_computer.jpg.