GB1275360A - A method for multiplication and division of numerical quantities and a device for carrying out said method - Google Patents

A method for multiplication and division of numerical quantities and a device for carrying out said method

Info

Publication number
GB1275360A
GB1275360A GB4553670A GB4553670A GB1275360A GB 1275360 A GB1275360 A GB 1275360A GB 4553670 A GB4553670 A GB 4553670A GB 4553670 A GB4553670 A GB 4553670A GB 1275360 A GB1275360 A GB 1275360A
Authority
GB
United Kingdom
Prior art keywords
scale
logarithm
length
multiplication
division
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
GB4553670A
Other languages
English (en)
Inventor
Finn Hovland
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1275360A publication Critical patent/GB1275360A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G1/00—Hand manipulated computing devices
    • G06G1/02—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales
    • G06G1/10—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation
    • G06G1/12—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation logarithmic graduations, e.g. for multiplication

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
GB4553670A 1969-09-25 1970-09-24 A method for multiplication and division of numerical quantities and a device for carrying out said method Expired GB1275360A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO382769A NO120212B (cs) 1969-09-25 1969-09-25

Publications (1)

Publication Number Publication Date
GB1275360A true GB1275360A (en) 1972-05-24

Family

ID=19879870

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4553670A Expired GB1275360A (en) 1969-09-25 1970-09-24 A method for multiplication and division of numerical quantities and a device for carrying out said method

Country Status (4)

Country Link
DE (1) DE2046535A1 (cs)
FR (1) FR2063014B1 (cs)
GB (1) GB1275360A (cs)
NO (1) NO120212B (cs)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR764576A (cs) * 1934-05-23
US1484176A (en) * 1923-01-22 1924-02-19 William S Haimes Computing device
FR998539A (fr) * 1945-10-24 1952-01-21 Appareil à calculer

Also Published As

Publication number Publication date
FR2063014B1 (cs) 1976-02-06
NO120212B (cs) 1970-09-14
DE2046535A1 (de) 1971-04-22
FR2063014A1 (cs) 1971-07-02

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Legal Events

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