GB2130774B - Circuits for operating on n-digit operands - Google Patents

Circuits for operating on n-digit operands

Info

Publication number
GB2130774B
GB2130774B GB08330889A GB8330889A GB2130774B GB 2130774 B GB2130774 B GB 2130774B GB 08330889 A GB08330889 A GB 08330889A GB 8330889 A GB8330889 A GB 8330889A GB 2130774 B GB2130774 B GB 2130774B
Authority
GB
United Kingdom
Prior art keywords
circuits
operating
digit operands
operands
digit
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
Application number
GB08330889A
Other versions
GB8330889D0 (en
GB2130774A (en
Inventor
Frederick A Ware
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.)
HP Inc
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of GB8330889D0 publication Critical patent/GB8330889D0/en
Publication of GB2130774A publication Critical patent/GB2130774A/en
Application granted granted Critical
Publication of GB2130774B publication Critical patent/GB2130774B/en
Expired 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
    • G06F7/74—Selecting or encoding within a word the position of one or more bits having a specified value, e.g. most or least significant one or zero detection, priority encoders
    • 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
    • G06F7/5055—Adding; Subtracting in bit-parallel fashion, i.e. having a different digit-handling circuit for each denomination in which one operand is a constant, i.e. incrementers or decrementers
    • 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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/506—Indexing scheme relating to groups G06F7/506 - G06F7/508
    • G06F2207/5063—2-input gates, i.e. only using 2-input logical gates, e.g. binary carry look-ahead, e.g. Kogge-Stone or Ladner-Fischer adder
GB08330889A 1982-08-23 1983-11-18 Circuits for operating on n-digit operands Expired GB2130774B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US41080782A 1982-08-23 1982-08-23

Publications (3)

Publication Number Publication Date
GB8330889D0 GB8330889D0 (en) 1983-12-29
GB2130774A GB2130774A (en) 1984-06-06
GB2130774B true GB2130774B (en) 1986-02-12

Family

ID=23626312

Family Applications (3)

Application Number Title Priority Date Filing Date
GB08330888A Expired GB2130771B (en) 1982-08-23 1983-03-07 Incrementer for operating on n-digit operands
GB08306208A Expired GB2127187B (en) 1982-08-23 1983-03-07 Circuits for operating on n-digit operands
GB08330889A Expired GB2130774B (en) 1982-08-23 1983-11-18 Circuits for operating on n-digit operands

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB08330888A Expired GB2130771B (en) 1982-08-23 1983-03-07 Incrementer for operating on n-digit operands
GB08306208A Expired GB2127187B (en) 1982-08-23 1983-03-07 Circuits for operating on n-digit operands

Country Status (3)

Country Link
JP (6) JPS5957343A (en)
DE (1) DE3326388A1 (en)
GB (3) GB2130771B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6055438A (en) * 1983-09-05 1985-03-30 Matsushita Electric Ind Co Ltd Two-input adder
JPS6275840A (en) * 1985-09-30 1987-04-07 Toshiba Corp Carry selecting adder
DE58909280D1 (en) * 1988-07-29 1995-07-13 Siemens Ag Carry select adders.
US4956802A (en) * 1988-12-14 1990-09-11 Sun Microsystems, Inc. Method and apparatus for a parallel carry generation adder
US5136539A (en) * 1988-12-16 1992-08-04 Intel Corporation Adder with intermediate carry circuit
JPH0651950A (en) * 1992-07-30 1994-02-25 Mitsubishi Electric Corp Adder circuit
US6527748B1 (en) 1998-08-17 2003-03-04 Yutaka Suzuki Method of gastrostomy, and an infection preventive cover, kit or catheter kit, and a gastrostomy catheter kit

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078337A (en) * 1958-12-17 1963-02-19 Skiatron Elect & Tele Metering systems
US3138703A (en) * 1959-12-29 1964-06-23 Ibm Full adder
DE1231311B (en) * 1964-11-17 1966-12-29 Siemens Ag Circuit arrangement for converting information, in particular for time division multiplex telephone exchange systems
US3316393A (en) * 1965-03-25 1967-04-25 Honeywell Inc Conditional sum and/or carry adder
GB1143886A (en) * 1966-10-13
GB1391175A (en) * 1971-08-04 1975-04-16 Cambridge Consultants Lttd Electrical circuit means for use in acoustic emission detecting and or recording apparatus
GB1479939A (en) * 1973-09-25 1977-07-13 Siemens Ag Programme-controlled data switching systems
JPS537349B2 (en) * 1974-03-27 1978-03-16
JPS5446224U (en) * 1977-09-07 1979-03-30
EP0052157A1 (en) * 1980-11-15 1982-05-26 Deutsche ITT Industries GmbH Binary MOS carry look ahead parallel adder

Also Published As

Publication number Publication date
DE3326388C2 (en) 1993-04-01
JPH0467212B2 (en) 1992-10-27
JPH03228121A (en) 1991-10-09
JPH0467213B2 (en) 1992-10-27
JPH03228122A (en) 1991-10-09
JPH0450614B2 (en) 1992-08-14
JPH03229320A (en) 1991-10-11
GB2130771B (en) 1986-02-12
JPH0366693B2 (en) 1991-10-18
JPH03229321A (en) 1991-10-11
JPS5957343A (en) 1984-04-02
GB2127187B (en) 1986-03-05
GB8330888D0 (en) 1983-12-29
GB8330889D0 (en) 1983-12-29
GB8306208D0 (en) 1983-04-13
GB2130771A (en) 1984-06-06
JPH0467211B2 (en) 1992-10-27
GB2127187A (en) 1984-04-04
JPH0450615B2 (en) 1992-08-14
JPH03228120A (en) 1991-10-09
GB2130774A (en) 1984-06-06
DE3326388A1 (en) 1984-02-23

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960307