GB1312791A - Arithmetic and logical units - Google Patents

Arithmetic and logical units

Info

Publication number
GB1312791A
GB1312791A GB3591870A GB3591870A GB1312791A GB 1312791 A GB1312791 A GB 1312791A GB 3591870 A GB3591870 A GB 3591870A GB 3591870 A GB3591870 A GB 3591870A GB 1312791 A GB1312791 A GB 1312791A
Authority
GB
United Kingdom
Prior art keywords
excl
result
parity
bit
operand
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
GB3591870A
Other languages
English (en)
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 DE19691938912 external-priority patent/DE1938912C/de
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1312791A publication Critical patent/GB1312791A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Detection And Correction Of Errors (AREA)
  • Error Detection And Correction (AREA)
  • Logic Circuits (AREA)
GB3591870A 1969-07-31 1970-07-24 Arithmetic and logical units Expired GB1312791A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691938912 DE1938912C (de) 1969-07-31 Arithmetische und logische Einheit mit Fehlerprufung

Publications (1)

Publication Number Publication Date
GB1312791A true GB1312791A (en) 1973-04-04

Family

ID=5741461

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3591870A Expired GB1312791A (en) 1969-07-31 1970-07-24 Arithmetic and logical units

Country Status (6)

Country Link
US (1) US3649817A (https=)
JP (1) JPS5213066B1 (https=)
CA (1) CA931270A (https=)
CH (1) CH510303A (https=)
FR (1) FR2056229A5 (https=)
GB (1) GB1312791A (https=)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125591A (en) * 1982-08-14 1984-03-07 Int Computers Ltd Checking sequential logic circuits
US4556976A (en) * 1982-08-14 1985-12-03 International Computers Limited Checking sequential logic circuits

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911261A (en) * 1974-09-09 1975-10-07 Ibm Parity prediction and checking network
US4035626A (en) * 1976-03-29 1977-07-12 Sperry Rand Corporation Parity predict network for M-level N'th power galois arithmetic gate
US4084253A (en) * 1977-01-03 1978-04-11 Honeywell Information Systems Inc. Current mode arithmetic logic circuit with parity prediction and checking
GB1595479A (en) * 1977-01-03 1981-08-12 Honeywell Inf Systems Digital logic circuitry
US4084252A (en) * 1977-01-03 1978-04-11 Honeywell Information Systems Inc. Current mode 5-bit arithmetic logic unit with parity
JPS53160255U (https=) * 1977-05-24 1978-12-15
US4914579A (en) * 1988-02-17 1990-04-03 International Business Machines Corporation Apparatus for branch prediction for computer instructions
US4924424A (en) * 1988-04-25 1990-05-08 International Business Machines Corporation Parity prediction for binary adders with selection
GB2293469A (en) * 1994-09-22 1996-03-27 Secr Defence Error detection in arithmetic circuit.
US9037355B2 (en) * 2007-11-05 2015-05-19 Deere & Company Control assembly for auxiliary hydraulics

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111578A (en) * 1959-12-31 1963-11-19 Ibm Utilizing predicted parity
US3342983A (en) * 1963-06-25 1967-09-19 Ibm Parity checking and parity generating means for binary adders
GB1054203A (https=) * 1963-12-04
US3555255A (en) * 1968-08-09 1971-01-12 Bell Telephone Labor Inc Error detection arrangement for data processing register

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125591A (en) * 1982-08-14 1984-03-07 Int Computers Ltd Checking sequential logic circuits
US4556976A (en) * 1982-08-14 1985-12-03 International Computers Limited Checking sequential logic circuits

Also Published As

Publication number Publication date
CH510303A (de) 1971-07-15
FR2056229A5 (https=) 1971-05-14
DE1938912A1 (de) 1971-02-11
CA931270A (en) 1973-07-31
JPS5213066B1 (https=) 1977-04-12
DE1938912B2 (de) 1972-10-19
US3649817A (en) 1972-03-14

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee