DE275717C - - Google Patents

Info

Publication number
DE275717C
DE275717C DENDAT275717D DE275717DA DE275717C DE 275717 C DE275717 C DE 275717C DE NDAT275717 D DENDAT275717 D DE NDAT275717D DE 275717D A DE275717D A DE 275717DA DE 275717 C DE275717 C DE 275717C
Authority
DE
Germany
Prior art keywords
numbers
rows
calculator
digit
band
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.)
Active
Application number
DENDAT275717D
Other languages
German (de)
English (en)
Publication of DE275717C publication Critical patent/DE275717C/de
Active legal-status Critical Current

Links

Classifications

    • 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

  • Business, Economics & Management (AREA)
  • Engineering & Computer Science (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Devices For Executing Special Programs (AREA)
DENDAT275717D Active DE275717C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE275717C true DE275717C (enrdf_load_stackoverflow)

Family

ID=531984

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT275717D Active DE275717C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE275717C (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
DE10036421A1 (de) Verfahren zur einhändigen Texteingabe in tastaturlose Mobilgeräte
US3633287A (en) Numerical base systems teaching device
US3688418A (en) Manual computing device
DE275717C (enrdf_load_stackoverflow)
US1892634A (en) Calculating device
US1483916A (en) Educational appliance
DE515071C (de) Rechenschieber
DE493725C (de) Vorrichtung zur Ausfuehrung einfacher Multiplikationen und Divisionen fuer Bueros, Schulen o. dgl.
DE1972309U (de) Variable stellentafel.
DE297142C (enrdf_load_stackoverflow)
DE226164C (enrdf_load_stackoverflow)
DE873157C (de) Rechentafel
US390824A (en) Apparatus for teaching arithmetic
DE92695C (enrdf_load_stackoverflow)
DE71715C (de) Rechenwalze
DE844511C (de) Rechenmaschine fuer den Schulunterricht
DE421045C (de) Multiplikations- und Divisionsvorrichtung
DE818265C (de) Vorrichtung zum Aufsetzen und Abheben der Gewichte bei Praezisionswaagen
AT22050B (de) Rechenmaschine.
DE159439C (enrdf_load_stackoverflow)
DE845860C (de) Preisskala
DE1023C (de) Selbstthätiger mechanischer Rechenapparat
AT41997B (de) Rechenlehrmittel.
DE410436C (de) Schreibstift mit Zaehlwerk
US1181257A (en) Calculating-machine.