GB936331A - Improvements in data processing systems - Google Patents

Improvements in data processing systems

Info

Publication number
GB936331A
GB936331A GB26860A GB26860A GB936331A GB 936331 A GB936331 A GB 936331A GB 26860 A GB26860 A GB 26860A GB 26860 A GB26860 A GB 26860A GB 936331 A GB936331 A GB 936331A
Authority
GB
United Kingdom
Prior art keywords
read
location
storage
store
character
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
GB26860A
Inventor
Oliver Dolan Evans
Frank Buford Hartman
William Roy Demmer
Arthur Trachy Warren C Richard
Ralph A Gregory
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
Priority to GB26860A priority Critical patent/GB936331A/en
Publication of GB936331A publication Critical patent/GB936331A/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.
    • 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
    • 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
    • G06F2207/492—Indexing scheme relating to groups G06F7/492 - G06F7/496
    • G06F2207/4921—Single digit adding or subtracting

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)

Abstract

936,331. Digital electric calculating. INTERNATIONAL BUSINESS MACHINES CORPORATION. Jan. 4, 1960, No. 268/60. Class 106 (1). An operation is divided into an instruction cycle, in which the computer controls are set up, and a variable number of execute cycles in which data specified by the instruction is operated on. Each execute cycle is divided into a read time in which a data character can be read from a store and a write time in which a data character can be written into a store. The invention provides means stated to be conventional in form whereby data read from a store location during a read time is written back in that location after processing during the write time of the succeeding execute cycle, reading from the succeeding store location having taken place during the intervening read time. The operands are taken from core memory 1.10 and storage 1.12. A location in memory 1.10 comprises five binary-coded decimal characters which are read out in parallel to buffer register 1.16. From the buffer register single characters are read out to CR-1, 1.18. A location in storage 1.12 comprises a single character which from buffer register 1.34 is read to CR-2, 1.36. The characters in CR-1, CR-2 are operated on in arithmetic unit 1.14 and the result placed in register 1.52, from which it may be returned either to memory or storage. Storage 1.12 is a five character register into which an operand is read preparatory to an arithmetic operation.
GB26860A 1960-01-04 1960-01-04 Improvements in data processing systems Expired GB936331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB26860A GB936331A (en) 1960-01-04 1960-01-04 Improvements in data processing systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26860A GB936331A (en) 1960-01-04 1960-01-04 Improvements in data processing systems

Publications (1)

Publication Number Publication Date
GB936331A true GB936331A (en) 1963-09-11

Family

ID=9701366

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26860A Expired GB936331A (en) 1960-01-04 1960-01-04 Improvements in data processing systems

Country Status (1)

Country Link
GB (1) GB936331A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2558613A1 (en) * 1984-01-24 1985-07-26 Int Computers Ltd APPARATUS FOR PROCESSING PIPELINE TYPE DATA

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2558613A1 (en) * 1984-01-24 1985-07-26 Int Computers Ltd APPARATUS FOR PROCESSING PIPELINE TYPE DATA
GB2153558A (en) * 1984-01-24 1985-08-21 Int Computers Ltd Pipelined data processing
US4639866A (en) * 1984-01-24 1987-01-27 International Computers Limited Pipelined data processing apparatus

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