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JPS5595164A - Electronic desk-top calculator on battery drive system - Google Patents

Electronic desk-top calculator on battery drive system

Info

Publication number
JPS5595164A
JPS5595164A JP349979A JP349979A JPS5595164A JP S5595164 A JPS5595164 A JP S5595164A JP 349979 A JP349979 A JP 349979A JP 349979 A JP349979 A JP 349979A JP S5595164 A JPS5595164 A JP S5595164A
Authority
JP
Japan
Prior art keywords
battery
switch
capacitor
arithmetic
replacement
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.)
Granted
Application number
JP349979A
Other languages
Japanese (ja)
Other versions
JPS6223906B2 (en
Inventor
Shigeru Toyomura
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP349979A priority Critical patent/JPS5595164A/en
Publication of JPS5595164A publication Critical patent/JPS5595164A/en
Publication of JPS6223906B2 publication Critical patent/JPS6223906B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Input From Keyboards Or The Like (AREA)
  • Power Sources (AREA)
  • Calculators And Similar Devices (AREA)

Abstract

PURPOSE: To make it possible to attain an accurate calculation process even at the time when a battery is consumed and should be replaced, by providing a printer- attached battery-driving electronic desk-top calculator with a method of holding calculation data, an arithmetic state and memory contents during the replacement of the battery.
CONSTITUTION: With power switch PS ON, capacitor C is charged by a current from battery B and the current is supplied to key-board part K, AND gates G1 and G2, arithmetic part A, liquid-crystal display part D, and print part P. The capacity of capacitor C is set large enough to enable K, G1, G2, A and D parts to operate for a few minutes by the stored charge and even if a battery is replaced with switch PS ON, the contents of the memory and an arithmetic state are held. With switch PS OFF, capacitor C is discharged via resistance R. Key input signal inhibition switch KS is an automatic switch interlocking with the attachment and detachment of the battery and when the battery is taken out, KS is ON to inhibit gates G1 and G2, so that key input at the time of the replacement of the battery will automatically be inhibited.
COPYRIGHT: (C)1980,JPO&Japio
JP349979A 1979-01-12 1979-01-12 Electronic desk-top calculator on battery drive system Granted JPS5595164A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP349979A JPS5595164A (en) 1979-01-12 1979-01-12 Electronic desk-top calculator on battery drive system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP349979A JPS5595164A (en) 1979-01-12 1979-01-12 Electronic desk-top calculator on battery drive system

Publications (2)

Publication Number Publication Date
JPS5595164A true JPS5595164A (en) 1980-07-19
JPS6223906B2 JPS6223906B2 (en) 1987-05-26

Family

ID=11559033

Family Applications (1)

Application Number Title Priority Date Filing Date
JP349979A Granted JPS5595164A (en) 1979-01-12 1979-01-12 Electronic desk-top calculator on battery drive system

Country Status (1)

Country Link
JP (1) JPS5595164A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS581179A (en) * 1981-06-27 1983-01-06 株式会社デンソー Vehicle navigator
JPS5974451U (en) * 1982-11-09 1984-05-21 シャープ株式会社 Electronics
JPS61175755A (en) * 1985-01-31 1986-08-07 Canon Inc Electronic device
US4999794A (en) * 1988-03-14 1991-03-12 Sharp Kabushiki Kaisha Electronic device for reducing the power consumption during the supply of back up power
JPH03108576A (en) * 1984-04-03 1991-05-08 Monarch Marking Syst Inc Portable labeler

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5133848A (en) * 1974-09-18 1976-03-23 Casio Computer Co Ltd
JPS51134335U (en) * 1975-04-18 1976-10-29
JPS5211604A (en) * 1975-05-30 1977-01-28 Torstensson Bengt Arne Method of and apparatus for measuring water pressure of small cavity under ground

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5133848A (en) * 1974-09-18 1976-03-23 Casio Computer Co Ltd
JPS51134335U (en) * 1975-04-18 1976-10-29
JPS5211604A (en) * 1975-05-30 1977-01-28 Torstensson Bengt Arne Method of and apparatus for measuring water pressure of small cavity under ground

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS581179A (en) * 1981-06-27 1983-01-06 株式会社デンソー Vehicle navigator
JPH0541925B2 (en) * 1981-06-27 1993-06-25 Nippon Denso Co
JPS5974451U (en) * 1982-11-09 1984-05-21 シャープ株式会社 Electronics
JPH03108576A (en) * 1984-04-03 1991-05-08 Monarch Marking Syst Inc Portable labeler
JPS61175755A (en) * 1985-01-31 1986-08-07 Canon Inc Electronic device
US4999794A (en) * 1988-03-14 1991-03-12 Sharp Kabushiki Kaisha Electronic device for reducing the power consumption during the supply of back up power

Also Published As

Publication number Publication date
JPS6223906B2 (en) 1987-05-26

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