GB1279355A - Arithmetic and logic unit - Google Patents

Arithmetic and logic unit

Info

Publication number
GB1279355A
GB1279355A GB26720/70A GB2672070A GB1279355A GB 1279355 A GB1279355 A GB 1279355A GB 26720/70 A GB26720/70 A GB 26720/70A GB 2672070 A GB2672070 A GB 2672070A GB 1279355 A GB1279355 A GB 1279355A
Authority
GB
United Kingdom
Prior art keywords
bits
operand
compl
modules
arithmetic
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
GB26720/70A
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
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1279355A publication Critical patent/GB1279355A/en
Expired legal-status Critical Current

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.
    • G06F7/492—Computations with decimal numbers radix 12 or 20. using a binary weighted representation within each denomination
    • G06F7/493—Computations with decimal numbers radix 12 or 20. using a binary weighted representation within each denomination the representation being the natural binary coded representation, i.e. 8421-code
    • G06F7/494—Adding; Subtracting
    • G06F7/495—Adding; Subtracting in digit-serial fashion, i.e. having a single digit-handling circuit treating all denominations after each other
    • 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)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Computational Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Executing Machine-Instructions (AREA)
  • Detection And Correction Of Errors (AREA)
  • Complex Calculations (AREA)
  • Error Detection And Correction (AREA)
  • Logic Circuits (AREA)
GB26720/70A 1969-06-12 1970-06-03 Arithmetic and logic unit Expired GB1279355A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83268469A 1969-06-12 1969-06-12

Publications (1)

Publication Number Publication Date
GB1279355A true GB1279355A (en) 1972-06-28

Family

ID=25262350

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26720/70A Expired GB1279355A (en) 1969-06-12 1970-06-03 Arithmetic and logic unit

Country Status (5)

Country Link
US (1) US3596074A (cg-RX-API-DMAC7.html)
JP (1) JPS5126020B1 (cg-RX-API-DMAC7.html)
CH (1) CH504725A (cg-RX-API-DMAC7.html)
FR (1) FR2052351A5 (cg-RX-API-DMAC7.html)
GB (1) GB1279355A (cg-RX-API-DMAC7.html)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3711693A (en) * 1971-06-30 1973-01-16 Honeywell Inf Systems Modular bcd and binary arithmetic and logical system
USH1970H1 (en) 1971-07-19 2001-06-05 Texas Instruments Incorporated Variable function programmed system
US4503511A (en) * 1971-08-31 1985-03-05 Texas Instruments Incorporated Computing system with multifunctional arithmetic logic unit in single integrated circuit
US4037094A (en) * 1971-08-31 1977-07-19 Texas Instruments Incorporated Multi-functional arithmetic and logical unit
US3749899A (en) * 1972-06-15 1973-07-31 Hewlett Packard Co Binary/bcd arithmetic logic unit
US3752394A (en) * 1972-07-31 1973-08-14 Ibm Modular arithmetic and logic unit
FR2253415A5 (cg-RX-API-DMAC7.html) * 1973-12-04 1975-06-27 Cii
CH1130374A4 (cg-RX-API-DMAC7.html) * 1974-08-19 1977-03-31
US3956620A (en) * 1974-11-26 1976-05-11 Texas Instruments Incorporated Adder with carry enable for bit operations in an electric digital calculator
US3958112A (en) * 1975-05-09 1976-05-18 Honeywell Information Systems, Inc. Current mode binary/bcd arithmetic array
US4125867A (en) * 1976-10-27 1978-11-14 Texas Instruments Incorporated Electronic calculator or microprocessor having a hexadecimal/binary coded decimal arithmetic unit
US4118786A (en) * 1977-01-10 1978-10-03 International Business Machines Corporation Integrated binary-BCD look-ahead adder
JPS53130021U (cg-RX-API-DMAC7.html) * 1977-03-22 1978-10-16
US5964825A (en) * 1996-02-09 1999-10-12 Texas Instruments Incorporated Manipulation of boolean values and conditional operation in a microprocessor
US6374346B1 (en) 1997-01-24 2002-04-16 Texas Instruments Incorporated Processor with conditional execution of every instruction

Also Published As

Publication number Publication date
CH504725A (de) 1971-03-15
JPS5126020B1 (cg-RX-API-DMAC7.html) 1976-08-04
US3596074A (en) 1971-07-27
DE2027179B2 (de) 1972-08-24
FR2052351A5 (cg-RX-API-DMAC7.html) 1971-04-09
DE2027179A1 (de) 1971-01-07

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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