JPS5719823A - Interval timer module - Google Patents

Interval timer module

Info

Publication number
JPS5719823A
JPS5719823A JP9305580A JP9305580A JPS5719823A JP S5719823 A JPS5719823 A JP S5719823A JP 9305580 A JP9305580 A JP 9305580A JP 9305580 A JP9305580 A JP 9305580A JP S5719823 A JPS5719823 A JP S5719823A
Authority
JP
Japan
Prior art keywords
power supply
electric power
time
service interruption
counter
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
JP9305580A
Other languages
Japanese (ja)
Inventor
Shigeto Shimada
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP9305580A priority Critical patent/JPS5719823A/en
Publication of JPS5719823A publication Critical patent/JPS5719823A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Power Sources (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

PURPOSE:To make an external standard clock of a computer unnecessary, by constituting so that a service interruption time is counted at the time of service interruption of a computer, adding a count value and a service interruption generation time which has been saved in a memory device, after an electric power supply has been returned, and calculating a present time. CONSTITUTION:When an operating electric power supply VS1 from the outside is disconnected due to service interruption, an operating electric power supply switching circuit 210 changes over an operating electric power supply to a battery 208, and an electric power supply VS2 is supplied to each circuit in an interval timer module 23. A signal of rise-up in case when the electric power supply is changed over is delayed for a constant time, and after that, is waveform-shaped by a one shot circuit 212, and is inputted to an AND gate 214. In the gate 214, the fate is opened when the electric power supply VS1 is disconnected, a clear signal is sent to a time counting counter 203, makes contents of the counter 203 ''0'', and after that, counts a clock of a clock generator 202 over again. When the electric power supply is released, a count value of the counter 203 is stored in a read register 204 and is sent to an operation control part 21 by a signal from the control part 21, and is added to a service interruption generation time which has been saved in a memory device 22.
JP9305580A 1980-07-08 1980-07-08 Interval timer module Pending JPS5719823A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9305580A JPS5719823A (en) 1980-07-08 1980-07-08 Interval timer module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9305580A JPS5719823A (en) 1980-07-08 1980-07-08 Interval timer module

Publications (1)

Publication Number Publication Date
JPS5719823A true JPS5719823A (en) 1982-02-02

Family

ID=14071815

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9305580A Pending JPS5719823A (en) 1980-07-08 1980-07-08 Interval timer module

Country Status (1)

Country Link
JP (1) JPS5719823A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63268058A (en) * 1987-04-27 1988-11-04 Sony Corp Microcomputer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63268058A (en) * 1987-04-27 1988-11-04 Sony Corp Microcomputer

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