GB2114785B - A decimal operand processing unit - Google Patents

A decimal operand processing unit

Info

Publication number
GB2114785B
GB2114785B GB08232426A GB8232426A GB2114785B GB 2114785 B GB2114785 B GB 2114785B GB 08232426 A GB08232426 A GB 08232426A GB 8232426 A GB8232426 A GB 8232426A GB 2114785 B GB2114785 B GB 2114785B
Authority
GB
United Kingdom
Prior art keywords
processing unit
operand processing
decimal operand
decimal
unit
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
GB08232426A
Other versions
GB2114785A (en
Inventor
Jerry L Kindell
Richard T Flynn
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.)
Bull HN Information Systems Italia SpA
Bull HN Information Systems Inc
Original Assignee
Honeywell Information Systems Italia SpA
Honeywell Information Systems Inc
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
Priority claimed from US06/000,222 external-priority patent/US4224677A/en
Priority claimed from US06/000,232 external-priority patent/US4247891A/en
Application filed by Honeywell Information Systems Italia SpA, Honeywell Information Systems Inc filed Critical Honeywell Information Systems Italia SpA
Publication of GB2114785A publication Critical patent/GB2114785A/en
Application granted granted Critical
Publication of GB2114785B publication Critical patent/GB2114785B/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
    • G06F7/38—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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Executing Machine-Instructions (AREA)
GB08232426A 1979-01-02 1982-11-12 A decimal operand processing unit Expired GB2114785B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/000,222 US4224677A (en) 1979-01-02 1979-01-02 Effective digit count on a resultant operand
US06/000,232 US4247891A (en) 1979-01-02 1979-01-02 Leading zero count formation

Publications (2)

Publication Number Publication Date
GB2114785A GB2114785A (en) 1983-08-24
GB2114785B true GB2114785B (en) 1984-01-18

Family

ID=26667354

Family Applications (2)

Application Number Title Priority Date Filing Date
GB7943411A Expired GB2039104B (en) 1979-01-02 1979-12-17 Data processing system
GB08232426A Expired GB2114785B (en) 1979-01-02 1982-11-12 A decimal operand processing unit

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB7943411A Expired GB2039104B (en) 1979-01-02 1979-12-17 Data processing system

Country Status (3)

Country Link
DE (1) DE3000006A1 (en)
FR (1) FR2445985A1 (en)
GB (2) GB2039104B (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3219982A (en) * 1961-11-14 1965-11-23 Ibm High order mark system
US3571803A (en) * 1968-06-04 1971-03-23 Bell Telephone Labor Inc Arithmetic unit for data processing systems
US3577130A (en) * 1969-10-03 1971-05-04 Fairchild Camera Instr Co Means for limiting field length of computed data
US3678259A (en) * 1970-07-28 1972-07-18 Singer Co Asynchronous logic for determining number of leading zeros in a digital word
US3751650A (en) * 1971-06-28 1973-08-07 Burroughs Corp Variable length arithmetic unit
US3739352A (en) * 1971-06-28 1973-06-12 Burroughs Corp Variable word width processor control
US4021655A (en) * 1976-03-30 1977-05-03 International Business Machines Corporation Oversized data detection hardware for data processors which store data at variable length destinations
US4106105A (en) * 1977-02-28 1978-08-08 The Singer Company Zero detector

Also Published As

Publication number Publication date
FR2445985A1 (en) 1980-08-01
DE3000006A1 (en) 1980-07-10
DE3000006C2 (en) 1988-12-29
GB2114785A (en) 1983-08-24
GB2039104B (en) 1983-09-01
FR2445985B1 (en) 1985-05-17
GB2039104A (en) 1980-07-30

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Legal Events

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