DE69330363T2 - Parallelisierter Übertragvorgriffsaddierer - Google Patents

Parallelisierter Übertragvorgriffsaddierer

Info

Publication number
DE69330363T2
DE69330363T2 DE69330363T DE69330363T DE69330363T2 DE 69330363 T2 DE69330363 T2 DE 69330363T2 DE 69330363 T DE69330363 T DE 69330363T DE 69330363 T DE69330363 T DE 69330363T DE 69330363 T2 DE69330363 T2 DE 69330363T2
Authority
DE
Germany
Prior art keywords
look ahead
carry look
ahead adder
parallel carry
parallel
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69330363T
Other languages
English (en)
Other versions
DE69330363D1 (de
Inventor
David Charles Mcclure
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STMicroelectronics lnc USA
Original Assignee
STMicroelectronics lnc USA
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 STMicroelectronics lnc USA filed Critical STMicroelectronics lnc USA
Publication of DE69330363D1 publication Critical patent/DE69330363D1/de
Application granted granted Critical
Publication of DE69330363T2 publication Critical patent/DE69330363T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR 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
    • G06F7/50—Adding; Subtracting
    • G06F7/505—Adding; Subtracting in bit-parallel fashion, i.e. having a different digit-handling circuit for each denomination
    • G06F7/506—Adding; Subtracting in bit-parallel fashion, i.e. having a different digit-handling circuit for each denomination with simultaneous carry generation for, or propagation over, two or more stages
    • G06F7/508—Adding; Subtracting in bit-parallel fashion, i.e. having a different digit-handling circuit for each denomination with simultaneous carry generation for, or propagation over, two or more stages using carry look-ahead circuits

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computing Systems (AREA)
  • Mathematical Optimization (AREA)
  • General Engineering & Computer Science (AREA)
  • Complex Calculations (AREA)
  • Logic Circuits (AREA)
DE69330363T 1992-03-31 1993-03-22 Parallelisierter Übertragvorgriffsaddierer Expired - Fee Related DE69330363T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86098192A 1992-03-31 1992-03-31

Publications (2)

Publication Number Publication Date
DE69330363D1 DE69330363D1 (de) 2001-07-26
DE69330363T2 true DE69330363T2 (de) 2001-11-15

Family

ID=25334545

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69330363T Expired - Fee Related DE69330363T2 (de) 1992-03-31 1993-03-22 Parallelisierter Übertragvorgriffsaddierer

Country Status (4)

Country Link
US (1) US5386377A (de)
EP (1) EP0564137B1 (de)
JP (1) JP3457696B2 (de)
DE (1) DE69330363T2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5513362A (en) * 1992-04-23 1996-04-30 Matsushita Electric Industrial Co., Ltd. Method of and apparatus for normalization of a floating point binary number
GB2374445B (en) 1999-12-23 2004-06-02 Intel Corp Method and apparatus for performing single-cycle addition or subtraction and comparison in redundant form arithmetic
US6813628B2 (en) 1999-12-23 2004-11-02 Intel Corporation Method and apparatus for performing equality comparison in redundant form arithmetic
US6826588B2 (en) 1999-12-23 2004-11-30 Intel Corporation Method and apparatus for a fast comparison in redundant form arithmetic

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1130683B (de) * 1956-02-20 1962-05-30 Bueroma Bueromaschinen Vertrie Vorrichtung zum Zerkleinern von Papier, insbesondere Knuellpapier, Pappe u. dgl.
US2879001A (en) * 1956-09-10 1959-03-24 Weinberger Arnold High-speed binary adder having simultaneous carry generation
US3202806A (en) * 1961-07-12 1965-08-24 Bell Telephone Labor Inc Digital parallel function generator
US3697735A (en) * 1969-07-22 1972-10-10 Burroughs Corp High-speed parallel binary adder
US4504924A (en) * 1982-06-28 1985-03-12 International Business Machines Corporation Carry lookahead logical mechanism using affirmatively referenced transfer gates
US4592005A (en) * 1982-07-06 1986-05-27 Sperry Corporation Masked arithmetic logic unit
US4660165A (en) * 1984-04-03 1987-04-21 Trw Inc. Pyramid carry adder circuit
JP2513721B2 (ja) * 1987-09-08 1996-07-03 株式会社リコー 加算器
DE68927488T2 (de) * 1988-04-20 1997-03-20 Fujitsu Ltd Binäre Übertragvorgriffsschaltung
US4891788A (en) * 1988-05-09 1990-01-02 Kreifels Gerard A FIFO with almost full/almost empty flag
US4888739A (en) * 1988-06-15 1989-12-19 Cypress Semiconductor Corporation First-in first-out buffer memory with improved status flags
US4974241A (en) * 1989-03-31 1990-11-27 Sgs-Thomson Microelectronics, Inc. Counter employing exclusive NOR gate and latches in combination
US4935719A (en) * 1989-03-31 1990-06-19 Sgs-Thomson Microelectronics, Inc. Comparator circuitry
US5097436A (en) * 1990-01-09 1992-03-17 Digital Equipment Corporation High performance adder using carry predictions
US5166899A (en) * 1990-07-18 1992-11-24 Hewlett-Packard Company Lookahead adder

Also Published As

Publication number Publication date
DE69330363D1 (de) 2001-07-26
JPH0644047A (ja) 1994-02-18
US5386377A (en) 1995-01-31
EP0564137B1 (de) 2001-06-20
EP0564137A1 (de) 1993-10-06
JP3457696B2 (ja) 2003-10-20

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee