FR736674A - Perfectionnements aux appareils à calculer basés sur le principe de l'échelle logarithmique enroulée en hélice - Google Patents

Perfectionnements aux appareils à calculer basés sur le principe de l'échelle logarithmique enroulée en hélice

Info

Publication number
FR736674A
FR736674A FR736674DA FR736674A FR 736674 A FR736674 A FR 736674A FR 736674D A FR736674D A FR 736674DA FR 736674 A FR736674 A FR 736674A
Authority
FR
France
Prior art keywords
principle
devices
calculated based
helically wound
logarithmic scale
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
Other languages
English (en)
Inventor
Jean Lafay
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 filed Critical
Application granted granted Critical
Publication of FR736674A publication Critical patent/FR736674A/fr
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
    • G06G1/04—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction
    • G06G1/08—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction with circular or helical scales
    • G06G1/085—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction with circular or helical scales borne by a cylinder

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
FR736674D 1932-04-26 1932-04-26 Perfectionnements aux appareils à calculer basés sur le principe de l'échelle logarithmique enroulée en hélice Expired FR736674A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR736674T 1932-04-26

Publications (1)

Publication Number Publication Date
FR736674A true FR736674A (fr) 1932-11-26

Family

ID=9131351

Family Applications (1)

Application Number Title Priority Date Filing Date
FR736674D Expired FR736674A (fr) 1932-04-26 1932-04-26 Perfectionnements aux appareils à calculer basés sur le principe de l'échelle logarithmique enroulée en hélice

Country Status (1)

Country Link
FR (1) FR736674A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2685410A (en) * 1954-08-03 Tabular calculator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2685410A (en) * 1954-08-03 Tabular calculator

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