AU638646B2 - Abacus - Google Patents

Abacus

Info

Publication number
AU638646B2
AU638646B2 AU25362/92A AU2536292A AU638646B2 AU 638646 B2 AU638646 B2 AU 638646B2 AU 25362/92 A AU25362/92 A AU 25362/92A AU 2536292 A AU2536292 A AU 2536292A AU 638646 B2 AU638646 B2 AU 638646B2
Authority
AU
Australia
Prior art keywords
abacus
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.)
Ceased
Application number
AU25362/92A
Other versions
AU2536292A (en
Inventor
R.B. Warden
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
Priority to AU25362/92A priority Critical patent/AU638646B2/en
Application granted granted Critical
Publication of AU2536292A publication Critical patent/AU2536292A/en
Publication of AU638646B2 publication Critical patent/AU638646B2/en
Priority to PCT/AU1993/000480 priority patent/WO1994008282A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Displays For Variable Information Using Movable Means (AREA)
AU25362/92A 1992-09-28 1992-09-28 Abacus Ceased AU638646B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU25362/92A AU638646B2 (en) 1992-09-28 1992-09-28 Abacus
PCT/AU1993/000480 WO1994008282A1 (en) 1992-09-28 1993-09-23 Abacus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU25362/92A AU638646B2 (en) 1992-09-28 1992-09-28 Abacus

Publications (2)

Publication Number Publication Date
AU2536292A AU2536292A (en) 1993-07-01
AU638646B2 true AU638646B2 (en) 1993-07-01

Family

ID=3714188

Family Applications (1)

Application Number Title Priority Date Filing Date
AU25362/92A Ceased AU638646B2 (en) 1992-09-28 1992-09-28 Abacus

Country Status (2)

Country Link
AU (1) AU638646B2 (en)
WO (1) WO1994008282A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1996430B (en) * 2006-12-15 2010-08-18 胡清六 Combined multifunctional mathematics teaching apparatus

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH499826A (en) * 1968-01-03 1970-11-30 Duparc Germaine Abacus
GB1235588A (en) * 1969-06-05 1971-06-16 Pan Tchao-Pang Lu-Ngam Improvements in and relating to calculating devices, more especially for teaching arithmetic
US4272674A (en) * 1977-10-31 1981-06-09 Tokyo Keiki Company Ltd. Check digit calculator
DE2833672A1 (en) * 1978-08-01 1980-02-21 Rudolf Otte Counting frame or abacus - has cubes or spheres labelled with numbers from 1 to 100 or 1 to 1000 in different colours or one colour
JPS55134468A (en) * 1979-04-04 1980-10-20 Koji Morooka Digital abacus
JPS58132845A (en) * 1981-12-29 1983-08-08 Fujitsu Ltd File processing system
JPS59153252A (en) * 1983-02-21 1984-09-01 Yasuhiro Aoki Abacus type electronic computer
JPS6068453A (en) * 1983-09-22 1985-04-19 Noboru Otsuki Abacus with electronic computer

Also Published As

Publication number Publication date
WO1994008282A1 (en) 1994-04-14

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired