GB1371552A - Arithmetic unit for the addition of two serially-present decimal numbers - Google Patents

Arithmetic unit for the addition of two serially-present decimal numbers

Info

Publication number
GB1371552A
GB1371552A GB3566672A GB3566672A GB1371552A GB 1371552 A GB1371552 A GB 1371552A GB 3566672 A GB3566672 A GB 3566672A GB 3566672 A GB3566672 A GB 3566672A GB 1371552 A GB1371552 A GB 1371552A
Authority
GB
United Kingdom
Prior art keywords
digits
correction
cycle
gate
registers
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
GB3566672A
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.)
Diehl Verwaltungs Stiftung
Original Assignee
Diehl GmbH and Co
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 Diehl GmbH and Co filed Critical Diehl GmbH and Co
Priority to IT2908773A priority Critical patent/IT1067753B/it
Publication of GB1371552A publication Critical patent/GB1371552A/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
    • G06F2207/00—Indexing scheme relating to methods or arrangements for processing data by operating upon the order or content of the data handled
    • G06F2207/491—Indexing scheme relating to groups G06F7/491 - G06F7/4917
    • G06F2207/4919—Using excess-3 code, i.e. natural BCD + offset of 3, rendering the code symmetrical within the series of 16 possible 4 bit values

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)
  • Error Detection And Correction (AREA)
  • Complex Calculations (AREA)
GB3566672A 1971-08-07 1972-07-31 Arithmetic unit for the addition of two serially-present decimal numbers Expired GB1371552A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT2908773A IT1067753B (it) 1972-07-31 1973-09-18 Materiali per contatti elettrici

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712139753 DE2139753C3 (de) 1971-08-07 1971-08-07 Rechenwerk für die Addition von zwei seriell vorliegenden Dezimalzahlen

Publications (1)

Publication Number Publication Date
GB1371552A true GB1371552A (en) 1974-10-23

Family

ID=5816179

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3566672A Expired GB1371552A (en) 1971-08-07 1972-07-31 Arithmetic unit for the addition of two serially-present decimal numbers

Country Status (4)

Country Link
DE (1) DE2139753C3 (https=)
FR (1) FR2149824A5 (https=)
GB (1) GB1371552A (https=)
IT (1) IT963732B (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58137381A (ja) * 1982-02-10 1983-08-15 Sony Corp デイジタルカラ−エンコ−ダ

Also Published As

Publication number Publication date
IT963732B (it) 1974-01-21
DE2139753C3 (de) 1974-02-21
DE2139753B2 (de) 1973-07-19
DE2139753A1 (de) 1973-02-22
FR2149824A5 (https=) 1973-03-30

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees