MANIAC II

MANIAC II

The MANIAC II (Mathematical Analyzer Numerical Integrator and Computer Model II) was a first-generation electronic computer, built in 1957 for use at Los Alamos Scientific Laboratory.

MANIAC II was built by the University of California and the Los Alamos Scientific Laboratory, completed in 1957. It used 2,850 Vacuum tubes and 1,040 diodes in the arithmetic unit. Overall it used 5,190 vacuum tubes, 3,050 diodes, and 1,160 transistors.

It had 4,096 words of memory in magnetic core (with 2.4 microsecond access time), supplemented by 12,288 words of memory using Williams tubes (with 15 microsecond access time). Each word was comprised of 48 bits. Its average multiplication time was 180 microseconds and the average division time was 300 microseconds.

By the time of its decommissioning, the computer was all solid-state, using a combination of
RTL, DTL and TTL. It had an array multiplier, 15 index registers, 16K of 6 microsecond cycle time core memory, and 64K of 2 microsecond cycle time core memory. A NOP instruction took about 2.5 microseconds. A Multiply took 8 microseconds, and a divide 25 microseconds. It had a paging unit using 1K word pages with an associative 16-deep lookup memory. A 1 Megaword CDC drum was hooked up as a Paging device. It also had several ADDS Special-Order Direct-View Storage-Tube terminals. These terminals used an extended character set which covered about all the mathematical symbols, and allowed for 1/2 line spacing for math formulas. (Personal Reminiscence of John Brockmeyer jab@lobo.net, one of its designers.)For I/O, it had 2 IBM 360 series 9-track and 2 7-track 1/2" tape drives. It had an 8-bit paper-tape reader and punch, and a 500 line-per-minute printer (1500 line-per-minute using the hexadecimal character set). Storage was 3 IBM 7000 series 1301 disk drives, each having 2 modules of 21.6 million characters apiece.

One of the data products of MANIAC II was the table of numbers appearing in the book "The 3-j and 6-j Symbols" by Manuel Rotenberg et al., published in 1959. Page 37 of that book contains a brief description of the implementation of the program on the computer, and the I/O devices used in the production of the book.

External links

* [http://ed-thelen.org/comp-hist/BRL61-m.html#MANIAC-II BRL report on MANIAC II]


Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • Maniac — (from Greek μανιακός, maniakos) may refer to: A person who exhibits the behaviour known as mania A classification of serial killer MANIAC I, an early computer Maniac, a pac man/hangman combination computer game designed to natively run on early… …   Wikipedia

  • Maniac — steht für: MANIAC I, 1952 unter der Leitung von Nicholas Metropolis gebauter Computer MANIAC II, 1957 gebauter Computer Maniac (1980), Slasher Film von 1980 Maniac (Lied), ein Lied des US amerikanischen Musikers Michael Sembello von 1983 Maniac! …   Deutsch Wikipedia

  • MANIAC I — (por sus siglas en inglés Mathematical Analyzer, Numerical Integrator, and Computer o Mathematical Analyzer, Numerator, Integrator, and Computer, de acuerdo a una referencia) fue una de las primeras computadoras, fue construida bajo la dirección… …   Wikipedia Español

  • maniac — MANIÁC, Ă, maniaci, ce, adj., s.m. şi f. (Persoană) care suferă de o manie (1); p.ext. (om) care este obsedat de o idee fixă sau care manifestă o preocupare exagerată pentru ceva, având adesea deprinderi ciudate; tipicar. [pr.: ni ac] – Din fr.… …   Dicționar Român

  • MANIAC —   [Abk. für Mathematical Analyzer, Numerical Integrator and Computer, dt. »mathematischer Analysierer, numerischer Integrator und Computer«], 1952 in Betrieb genommener Nachfolger des ENIAC …   Universal-Lexikon

  • MANIAC II — (por sus siglas en inglés Mathematical Analyzer Numerical Integrator and Computer Model II) fue una computadora de primera generación, construida en 1957 para ser usada por Los Alamos Scientific Laboratory. MANIAC II fue construida por la… …   Wikipedia Español

  • maniac — [mā′nē ak΄] adj. [ML maniacus] of, having, or showing mania; maniacal n. 1. a wildly or violently insane person; madman; lunatic 2. a person who has an excessive or persistent enthusiasm, liking, or desire for something [a football maniac] …   English World dictionary

  • Maniac — Ma ni*ac, a. [F. maniaque. See {Mania}.] Raving with madness; raging with disordered intellect; affected with mania; mad. [1913 Webster] …   The Collaborative International Dictionary of English

  • maniac — ma ni*ac, n. A raving lunatic; a madman. [1913 Webster] …   The Collaborative International Dictionary of English

  • -maniac — [mā′nē ak΄] combining form 1. forming nouns a person affected by a (specified) mania [kleptomaniac] 2. forming adjectives affected by a (specified) mania * * * …   Universalium

  • mâniac — mâniác, mâniáci, s.m. (înv.) scamator, măscărici. Trimis de blaurb, 06.07.2006. Sursa: DAR …   Dicționar Român

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”