JPS55143667A - Electronic desk-top calculator - Google Patents
Electronic desk-top calculatorInfo
- 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
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
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) |
-
1979
- 1979-04-24 JP JP5114079A patent/JPS55143667A/en active Pending
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