GB871477A - Improvements in or relating to electric digital computers - Google Patents

Improvements in or relating to electric digital computers

Info

Publication number
GB871477A
GB871477A GB8268/58A GB826858A GB871477A GB 871477 A GB871477 A GB 871477A GB 8268/58 A GB8268/58 A GB 8268/58A GB 826858 A GB826858 A GB 826858A GB 871477 A GB871477 A GB 871477A
Authority
GB
United Kingdom
Prior art keywords
register
instruction
registers
places
shift
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
GB8268/58A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB871477A publication Critical patent/GB871477A/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
    • G06F7/52—Multiplying; Dividing
    • G06F7/523—Multiplying only
    • G06F7/533—Reduction of the number of iteration steps or stages, e.g. using the Booth algorithm, log-sum, odd-even
    • G06F7/5332—Reduction of the number of iteration steps or stages, e.g. using the Booth algorithm, log-sum, odd-even by skipping over strings of zeroes or ones, e.g. using the Booth Algorithm
    • 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
    • G06F7/544—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 for evaluating functions by calculation
    • G06F7/5443—Sum of products

Landscapes

  • Engineering & Computer Science (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)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Complex Calculations (AREA)
  • Executing Machine-Instructions (AREA)
GB8268/58A 1957-03-16 1958-03-14 Improvements in or relating to electric digital computers Expired GB871477A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL215456 1957-03-16

Publications (1)

Publication Number Publication Date
GB871477A true GB871477A (en) 1961-06-28

Family

ID=19750848

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8268/58A Expired GB871477A (en) 1957-03-16 1958-03-14 Improvements in or relating to electric digital computers

Country Status (6)

Country Link
US (1) US3019977A (en:Method)
CH (1) CH385520A (en:Method)
DE (1) DE1090885B (en:Method)
FR (1) FR1200808A (en:Method)
GB (1) GB871477A (en:Method)
NL (2) NL113801C (en:Method)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3265874A (en) * 1961-12-27 1966-08-09 Scm Corp Data processing devices and systems
DE1190705B (de) * 1963-06-28 1965-04-08 Telefunken Patent Elektronische Vierspeziesrecheneinheit
EP0086904B1 (de) * 1982-02-18 1985-11-21 Deutsche ITT Industries GmbH Digitale Parallel-Rechenschaltung für positive und negative Binärzahlen
JPS62194540A (ja) * 1986-02-21 1987-08-27 Toshiba Corp ディジタル信号処理回路

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1066802A (en:Method) * 1948-01-16 1954-06-10
US2666575A (en) * 1949-10-26 1954-01-19 Gen Electric Calculating device
GB799705A (en) * 1953-11-20 1958-08-13 Nat Res Dev Improvements in or relating to electronic digital computing machines
US2913176A (en) * 1955-03-30 1959-11-17 Underwood Corp Data processing system

Also Published As

Publication number Publication date
CH385520A (de) 1964-12-15
NL215456A (en:Method)
US3019977A (en) 1962-02-06
NL113801C (en:Method)
FR1200808A (fr) 1959-12-24
DE1090885B (de) 1960-10-13

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