NL7800345A - CALCULATOR FOR EDUCATIONAL PURPOSES. - Google Patents

CALCULATOR FOR EDUCATIONAL PURPOSES.

Info

Publication number
NL7800345A
NL7800345A NL7800345A NL7800345A NL7800345A NL 7800345 A NL7800345 A NL 7800345A NL 7800345 A NL7800345 A NL 7800345A NL 7800345 A NL7800345 A NL 7800345A NL 7800345 A NL7800345 A NL 7800345A
Authority
NL
Netherlands
Prior art keywords
calculator
educational purposes
educational
purposes
Prior art date
Application number
NL7800345A
Other languages
Dutch (nl)
Original Assignee
Leismann Gmbh Helmut
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
Priority claimed from DE19777700712 external-priority patent/DE7700712U/en
Application filed by Leismann Gmbh Helmut filed Critical Leismann Gmbh Helmut
Publication of NL7800345A publication Critical patent/NL7800345A/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G1/00—Hand manipulated computing devices
    • G06G1/14—Hand manipulated computing devices in which a straight or curved line has to be drawn from given points on one or more input scales to one or more points on a result scale
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C1/00—Computing aids in which the computing members form at least part of the displayed result and are manipulated directly by hand, e.g. abacuses or pocket adding devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B19/00—Teaching not covered by other main groups of this subclass
    • G09B19/02—Counting; Calculating

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Business, Economics & Management (AREA)
  • Computing Systems (AREA)
  • Mathematical Physics (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Electrically Operated Instructional Devices (AREA)
  • Toys (AREA)
  • Portable Nailing Machines And Staplers (AREA)
NL7800345A 1977-01-12 1978-01-11 CALCULATOR FOR EDUCATIONAL PURPOSES. NL7800345A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19777700712 DE7700712U (en) 1977-01-12 Calculation aid

Publications (1)

Publication Number Publication Date
NL7800345A true NL7800345A (en) 1978-07-14

Family

ID=6674312

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7800345A NL7800345A (en) 1977-01-12 1978-01-11 CALCULATOR FOR EDUCATIONAL PURPOSES.

Country Status (6)

Country Link
BE (1) BE862861A (en)
CH (1) CH615774A5 (en)
ES (1) ES233239Y (en)
FR (1) FR2377664A1 (en)
IT (1) IT1109156B (en)
NL (1) NL7800345A (en)

Also Published As

Publication number Publication date
IT7819193A0 (en) 1978-01-12
IT1109156B (en) 1985-12-16
ES233239Y (en) 1978-07-16
ES233239U (en) 1978-03-16
CH615774A5 (en) 1980-02-15
FR2377664A1 (en) 1978-08-11
BE862861A (en) 1978-05-02

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Legal Events

Date Code Title Description
BV The patent application has lapsed