JPS55143667A - Electronic desk-top calculator - Google Patents

Electronic desk-top calculator

Info

Publication number
JPS55143667A
JPS55143667A JP5114079A JP5114079A JPS55143667A JP S55143667 A JPS55143667 A JP S55143667A JP 5114079 A JP5114079 A JP 5114079A JP 5114079 A JP5114079 A JP 5114079A JP S55143667 A JPS55143667 A JP S55143667A
Authority
JP
Japan
Prior art keywords
switch
electronic desk
terminals
power
mercury
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.)
Pending
Application number
JP5114079A
Other languages
Japanese (ja)
Inventor
Kazumi Sekine
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 JP5114079A priority Critical patent/JPS55143667A/en
Publication of JPS55143667A publication Critical patent/JPS55143667A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To simplify the operation of an electric power switch by automatically operation the switch by turning the electric power OFF when an electronic desk- top calculator is held nearly at a level and ON when at an angle within a certain range.
CONSTITUTION: In electronic desk-top calculator 1, mercury switch 2 with switch terminals 2' and 2" and mercury Hg in an airtight container is incorporated; when calculator 1 is held nearly at a level, terminals 2' and 2" are insulated from each other to cut off the power supply and when at an angle within a certain range, a short circuit is formed between terminals 2' and 2" to apply arithmetic circuit 4 with a voltage. In parallel to this mercury switch 5, slide switch 3 is connected and when sliding contact 3' of switch 3 is placed at position B, the power is automatically turned ON-OFF through the operation of switch 5. Further, when contact 3' is set to position A, the power is turned ON without reference to switch 5 to apply the voltage to circuit 4 and when at position C, the power supply is cut off without reference to the switch 5.
COPYRIGHT: (C)1980,JPO&Japio
JP5114079A 1979-04-24 1979-04-24 Electronic desk-top calculator Pending JPS55143667A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5114079A JPS55143667A (en) 1979-04-24 1979-04-24 Electronic desk-top calculator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5114079A JPS55143667A (en) 1979-04-24 1979-04-24 Electronic desk-top calculator

Publications (1)

Publication Number Publication Date
JPS55143667A true JPS55143667A (en) 1980-11-10

Family

ID=12878506

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5114079A Pending JPS55143667A (en) 1979-04-24 1979-04-24 Electronic desk-top calculator

Country Status (1)

Country Link
JP (1) JPS55143667A (en)

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