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ZA743469B - Improved scientific calculator - Google Patents

Improved scientific calculator

Info

Publication number
ZA743469B
ZA743469B ZA00743469A ZA743469A ZA743469B ZA 743469 B ZA743469 B ZA 743469B ZA 00743469 A ZA00743469 A ZA 00743469A ZA 743469 A ZA743469 A ZA 743469A ZA 743469 B ZA743469 B ZA 743469B
Authority
ZA
South Africa
Prior art keywords
scientific calculator
improved scientific
improved
calculator
scientific
Prior art date
Application number
ZA00743469A
Inventor
C Tung
A Baum
D Cochran
T Osborne
F Rode
P Dickinson
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of ZA743469B publication Critical patent/ZA743469B/en

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G99/00—Subject matter not provided for in other groups of this subclass
    • G04G99/006—Electronic time-pieces using a microcomputer, e.g. for multi-function clocks
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/0064—Visual time or date indication means in which functions not related to time can be displayed
    • G04G9/007—Visual time or date indication means in which functions not related to time can be displayed combined with a calculator or computing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/02—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/02—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators
    • G06F15/0225—User interface arrangements, e.g. keyboard, display; Interfaces to other computer systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/02—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators
    • G06F15/025—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators adapted to a specific application
    • G06F15/0258—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators adapted to a specific application for unit conversion

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Computing Systems (AREA)
  • Human Computer Interaction (AREA)
  • Mathematical Physics (AREA)
  • Calculators And Similar Devices (AREA)
  • Electric Clocks (AREA)
  • Complex Calculations (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
ZA00743469A 1973-05-29 1974-05-29 Improved scientific calculator ZA743469B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US36457073A 1973-05-29 1973-05-29

Publications (1)

Publication Number Publication Date
ZA743469B true ZA743469B (en) 1975-06-25

Family

ID=23435094

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00743469A ZA743469B (en) 1973-05-29 1974-05-29 Improved scientific calculator

Country Status (8)

Country Link
JP (1) JPS5653784B2 (en)
AU (1) AU471040B2 (en)
CA (1) CA1028427A (en)
CH (1) CH611762GA3 (en)
DE (2) DE2424756C3 (en)
FR (1) FR2232011B1 (en)
GB (4) GB1476951A (en)
ZA (1) ZA743469B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS525565A (en) * 1975-07-02 1977-01-17 Toshiba Corp Electric clock circuit
US4063409A (en) * 1976-01-05 1977-12-20 Intel Corporation Custom watch
US4158285A (en) * 1976-02-09 1979-06-19 Hewlett-Packard Company Interactive wristwatch calculator
JPS6059553B2 (en) * 1976-12-01 1985-12-25 カシオ計算機株式会社 timing device
US4181963A (en) * 1977-04-19 1980-01-01 Casio Computer Co., Ltd. Electronic calculator with time counting function
JPS5451510A (en) * 1977-09-30 1979-04-23 Olympus Optical Co Ltd Tape recorder
DE2812242C2 (en) * 1978-03-21 1987-01-15 Robert Bosch Gmbh, 7000 Stuttgart Process control procedures
DE2951162A1 (en) * 1979-12-19 1981-07-02 Casio Computer Co., Ltd., Tokyo Power consumption control system for digital processor - has clock pulse generator disabled at pre-determined period after last key-in operation using counter circuit detector
JPS5842499B2 (en) * 1980-11-05 1983-09-20 オムロン株式会社 electronic cash register
JPS57185562A (en) * 1981-05-12 1982-11-15 Casio Comput Co Ltd Small-sized electronic calculator with program
JPS5890262A (en) * 1981-11-25 1983-05-28 Sharp Corp Electronic device
JPS61180182U (en) * 1985-04-27 1986-11-10
JPS6142491U (en) * 1985-07-18 1986-03-19 セイコーエプソン株式会社 Timing device with computer
GB2224866A (en) * 1988-11-02 1990-05-16 Julian David Williams Improvements in or relating to an event recording device

Also Published As

Publication number Publication date
DE2462301B2 (en) 1978-01-05
CH611762B (en)
JPS5653784B2 (en) 1981-12-21
GB1476952A (en) 1977-06-16
DE2424756A1 (en) 1975-01-09
JPS5047531A (en) 1975-04-28
DE2462301C3 (en) 1978-09-28
DE2424756C3 (en) 1978-06-01
AU6868174A (en) 1975-11-13
CH611762GA3 (en) 1979-06-29
CA1028427A (en) 1978-03-21
AU471040B2 (en) 1976-04-08
FR2232011A1 (en) 1974-12-27
GB1476954A (en) 1977-06-16
FR2232011B1 (en) 1982-02-19
DE2462301A1 (en) 1976-09-16
DE2424756B2 (en) 1977-10-06
GB1476953A (en) 1977-06-16
GB1476951A (en) 1977-06-16

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