NL141307B - Digitale rekeninrichting voor het uitvoeren van logaritmische bewerkingen. - Google Patents

Digitale rekeninrichting voor het uitvoeren van logaritmische bewerkingen.

Info

Publication number
NL141307B
NL141307B NL656512342A NL6512342A NL141307B NL 141307 B NL141307 B NL 141307B NL 656512342 A NL656512342 A NL 656512342A NL 6512342 A NL6512342 A NL 6512342A NL 141307 B NL141307 B NL 141307B
Authority
NL
Netherlands
Prior art keywords
digital calculator
performing logarithmic
logarithmic processing
processing
calculator
Prior art date
Application number
NL656512342A
Other languages
English (en)
Other versions
NL6512342A (nl
Original Assignee
Wang Laboratories
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wang Laboratories filed Critical Wang Laboratories
Publication of NL6512342A publication Critical patent/NL6512342A/xx
Publication of NL141307B publication Critical patent/NL141307B/nl

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/491—Computations with decimal numbers radix 12 or 20.
    • G06F7/498—Computations with decimal numbers radix 12 or 20. using counter-type accumulators
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/02—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F7/00—Methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F7/38—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation
    • G06F7/48—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices
    • G06F7/544—Methods or arrangements for performing computations using exclusively denominational number representation, e.g. using binary, ternary, decimal representation using non-contact-making devices, e.g. tube, solid state device; using unspecified devices for evaluating functions by calculation
    • G06F7/556—Logarithmic or exponential functions
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30003—Arrangements for executing specific machine instructions
    • G06F9/30007—Arrangements for executing specific machine instructions to perform operations on data operands
    • G06F9/3001—Arithmetic instructions

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computational Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Mathematical Optimization (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Complex Calculations (AREA)
NL656512342A 1964-09-22 1965-09-22 Digitale rekeninrichting voor het uitvoeren van logaritmische bewerkingen. NL141307B (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US398254A US3402285A (en) 1964-09-22 1964-09-22 Calculating apparatus

Publications (2)

Publication Number Publication Date
NL6512342A NL6512342A (nl) 1966-03-23
NL141307B true NL141307B (nl) 1974-02-15

Family

ID=23574642

Family Applications (1)

Application Number Title Priority Date Filing Date
NL656512342A NL141307B (nl) 1964-09-22 1965-09-22 Digitale rekeninrichting voor het uitvoeren van logaritmische bewerkingen.

Country Status (6)

Country Link
US (1) US3402285A (nl)
CH (1) CH463155A (nl)
DE (1) DE1499281B1 (nl)
GB (1) GB1071726A (nl)
NL (1) NL141307B (nl)
SE (1) SE342923B (nl)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4309761A (en) * 1964-06-26 1982-01-05 Hewlett-Packard Company Calculator for evaluating numerical answers to problems
US4198684A (en) * 1964-06-26 1980-04-15 Hewlett-Packard Company Electronic calculator with keyboard-controlled unary function capability
US3509329A (en) * 1966-10-24 1970-04-28 Wang Laboratories Calculator
US3610901A (en) * 1969-09-09 1971-10-05 Emerson Electric Co Digital modified discrete fourier transform doppler radar processor
US4051356A (en) * 1971-10-23 1977-09-27 Casio Computer Co., Ltd. Keyboard controlled data converter
GB1427806A (en) * 1972-05-09 1976-03-10 Sony Corp Electronic computer apparatus
GB1479718A (en) * 1973-08-02 1977-07-13 Ditmore H Data processing system
JPS5911151B2 (ja) * 1974-06-25 1984-03-13 カブシキガイシヤ ニツポンジドウシヤブヒンソウゴウケンキユウシヨ デジタル式対数関数発生装置
US4078250A (en) * 1974-08-21 1978-03-07 The Singer Company Log-antilog conversion for a digital radar system
US4058708A (en) * 1975-12-05 1977-11-15 Msi Data Corporation Bar code reader and decoder
US4092523A (en) * 1976-08-16 1978-05-30 Paul Tava Conversion calculator
US4218760A (en) 1976-09-13 1980-08-19 Lexicon Electronic dictionary with plug-in module intelligence
US5337266A (en) * 1987-12-21 1994-08-09 Arnold Mark G Method and apparatus for fast logarithmic addition and subtraction
US5359551A (en) * 1989-06-14 1994-10-25 Log Point Technologies, Inc. High speed logarithmic function generating apparatus
US5197024A (en) * 1989-06-14 1993-03-23 Pickett Lester C Method and apparatus for exponential/logarithmic computation
WO1994018632A1 (en) * 1993-02-01 1994-08-18 Lester Caryl Pickett Low latency function generating apparatus and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1124740B (de) * 1958-09-16 1962-03-01 Inst Regelungstechnik Schaltung und Steuerung von Mantissenwerken in Binaerzahl-Rechenmaschinen
US3099742A (en) * 1959-03-13 1963-07-30 Westinghouse Air Brake Co Digital flow computer employing a logarithmic mode of computation
US3141963A (en) * 1959-07-06 1964-07-21 Wissenschaftlich Tech Buro Fur Circuits and control for mantissa devices in binary computing machines

Also Published As

Publication number Publication date
SE342923B (nl) 1972-02-21
GB1071726A (en) 1967-06-14
CH463155A (de) 1968-09-30
NL6512342A (nl) 1966-03-23
DE1499281B1 (de) 1970-05-06
US3402285A (en) 1968-09-17

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