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JPS5523533A - Clock control system of small-size electronic computer - Google Patents

Clock control system of small-size electronic computer

Info

Publication number
JPS5523533A
JPS5523533A JP9505578A JP9505578A JPS5523533A JP S5523533 A JPS5523533 A JP S5523533A JP 9505578 A JP9505578 A JP 9505578A JP 9505578 A JP9505578 A JP 9505578A JP S5523533 A JPS5523533 A JP S5523533A
Authority
JP
Japan
Prior art keywords
gate
input end
key
inputted
input
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
JP9505578A
Other languages
Japanese (ja)
Inventor
Toshifumi Hoshii
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.)
Casio Computer Co Ltd
Original Assignee
Casio Computer 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 Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Priority to JP9505578A priority Critical patent/JPS5523533A/en
Publication of JPS5523533A publication Critical patent/JPS5523533A/en
Pending legal-status Critical Current

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  • Power Sources (AREA)
  • Calculators And Similar Devices (AREA)

Abstract

PURPOSE: To make restart possible by stopping the operation of an oscillator circuit and not clearing operating results, etc. in memories but holding them in case that on key input operation is executed for a prescribed time after the power source of a small-size computer is supplied.
CONSTITUTION: Control signal C outputted from ROM address part 16 in CPU 2 is inputted to the first input end of NAND gate 9 of input gate circuit 7 through inverter 8, and the output signal of NAND gate 10 is inputted to the second input end of gate 9. The output signal of gate 9 is inputted to the first input end of gate 10. The output end of a key is directly connected to the second input end of gate 10 so that the operation signal may be inputted to the second input end of gate 10 in case that the key in key input part 3 is operated, and the second input end of gate 10 is connected to the output terminal of the power source through resistance r. In case that no key is operated for a prescribed time, control signal C is outputted as "1" signal, and at this time, the oscillation operation of oscillator 5 is stopped by the operation of gate circuit 7.
COPYRIGHT: (C)1980,JPO&Japio
JP9505578A 1978-08-03 1978-08-03 Clock control system of small-size electronic computer Pending JPS5523533A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9505578A JPS5523533A (en) 1978-08-03 1978-08-03 Clock control system of small-size electronic computer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9505578A JPS5523533A (en) 1978-08-03 1978-08-03 Clock control system of small-size electronic computer

Publications (1)

Publication Number Publication Date
JPS5523533A true JPS5523533A (en) 1980-02-20

Family

ID=14127354

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9505578A Pending JPS5523533A (en) 1978-08-03 1978-08-03 Clock control system of small-size electronic computer

Country Status (1)

Country Link
JP (1) JPS5523533A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6299878A (en) * 1985-10-25 1987-05-09 Mitsubishi Electric Corp Data demodulator
JPS62131387A (en) * 1985-12-04 1987-06-13 Hitachi Ltd Portable data collection device
JPS6358524A (en) * 1986-08-29 1988-03-14 Toshiba Corp Portable medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6299878A (en) * 1985-10-25 1987-05-09 Mitsubishi Electric Corp Data demodulator
JPS62131387A (en) * 1985-12-04 1987-06-13 Hitachi Ltd Portable data collection device
JPS6358524A (en) * 1986-08-29 1988-03-14 Toshiba Corp Portable medium

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