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JPS5629765A - Electronic desk computer - Google Patents

Electronic desk computer

Info

Publication number
JPS5629765A
JPS5629765A JP10464479A JP10464479A JPS5629765A JP S5629765 A JPS5629765 A JP S5629765A JP 10464479 A JP10464479 A JP 10464479A JP 10464479 A JP10464479 A JP 10464479A JP S5629765 A JPS5629765 A JP S5629765A
Authority
JP
Japan
Prior art keywords
key
counter
power source
circuit
fixed time
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
JP10464479A
Other languages
Japanese (ja)
Inventor
Mamoru Nakahira
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP10464479A priority Critical patent/JPS5629765A/en
Publication of JPS5629765A publication Critical patent/JPS5629765A/en
Pending legal-status Critical Current

Links

Landscapes

  • Calculators And Similar Devices (AREA)

Abstract

PURPOSE: To avoid the wasteful consumption of the battery by securing an automatic cutoff of the connection from the electric power source to the arithmetic control circuit or the like in the lapse of a fixed time after the detection of the state change of the input key.
CONSTITUTION: When the key is released after completion of the key operation, the output of the key input detecting circuit 4 changes from "1" to "0". And the delayed 5 time pulse is delivered from the exclusive OR gate 6 to reset the counter 7. When the counter 7 has the full-count in a fixed time, relay switch 8 is opened to cut off the arithmetic control circuit 2 and the display unit 3 from the power source 9. Then with push of the key, the output of the circuit 4 changes from "0" to "1". However, the gate 6 delivers the pulse as in case the key is released. Thus the counter 7 is reset, and the switch 8 is opened in a fixed time. Thus an automatic cutoff is given to the connection from the power source to the arithmetic circuit or the like to avoid the wasteful consumption of the battery.
COPYRIGHT: (C)1981,JPO&Japio
JP10464479A 1979-08-17 1979-08-17 Electronic desk computer Pending JPS5629765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10464479A JPS5629765A (en) 1979-08-17 1979-08-17 Electronic desk computer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10464479A JPS5629765A (en) 1979-08-17 1979-08-17 Electronic desk computer

Publications (1)

Publication Number Publication Date
JPS5629765A true JPS5629765A (en) 1981-03-25

Family

ID=14386154

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10464479A Pending JPS5629765A (en) 1979-08-17 1979-08-17 Electronic desk computer

Country Status (1)

Country Link
JP (1) JPS5629765A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0437833A2 (en) * 1990-01-16 1991-07-24 RCA Thomson Licensing Corporation Automatic and interactive power controller for audio/video systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0437833A2 (en) * 1990-01-16 1991-07-24 RCA Thomson Licensing Corporation Automatic and interactive power controller for audio/video systems

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