JPS5723124A - Data processor - Google Patents

Data processor

Info

Publication number
JPS5723124A
JPS5723124A JP9787980A JP9787980A JPS5723124A JP S5723124 A JPS5723124 A JP S5723124A JP 9787980 A JP9787980 A JP 9787980A JP 9787980 A JP9787980 A JP 9787980A JP S5723124 A JPS5723124 A JP S5723124A
Authority
JP
Japan
Prior art keywords
power source
battery
maintenance
circuit
ram4
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
JP9787980A
Other languages
Japanese (ja)
Inventor
Tsuneo Tsukane
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP9787980A priority Critical patent/JPS5723124A/en
Publication of JPS5723124A publication Critical patent/JPS5723124A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Power Sources (AREA)

Abstract

PURPOSE:To exact and check a printed card without erasing data stored in an RAM by supplying electric power to only the RAM in maintenance inspection. CONSTITUTION:In inspecting the printed card of a waveform shaping circuit 2a for maintenance, an auxiliary power source 8 is disconnected first. Connectors 12a and 12b are coupled to connect a battery 11 for maintenance to an RAM4. Since, however, a control power source 7 generates a higher terminal voltage than the battery 11 for maintenance, electric power is supplied to each circuit from a control power source 7 and a data collector is in normal operation. A diode 11a for preventing a reverse current is connected between the battery 11 and RAM4, so no current flows from the power source 7 to the battery 11. When the power source 7 is turned off, a power failure detecting circuit 10 detects a power failure and places a CPU3 in a hold state to apply no voltage later, so that each circuit is turned off.
JP9787980A 1980-07-16 1980-07-16 Data processor Pending JPS5723124A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9787980A JPS5723124A (en) 1980-07-16 1980-07-16 Data processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9787980A JPS5723124A (en) 1980-07-16 1980-07-16 Data processor

Publications (1)

Publication Number Publication Date
JPS5723124A true JPS5723124A (en) 1982-02-06

Family

ID=14204028

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9787980A Pending JPS5723124A (en) 1980-07-16 1980-07-16 Data processor

Country Status (1)

Country Link
JP (1) JPS5723124A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5915132U (en) * 1982-07-19 1984-01-30 三洋電機株式会社 Discharge prevention device
JPS63180704A (en) * 1987-01-21 1988-07-25 Natl Space Dev Agency Japan<Nasda> Multistage opening valve
JP2004297141A (en) * 2003-03-25 2004-10-21 Nippon Hoso Kyokai <Nhk> View history acquisition system in data broadcast, transmitter, and receiver

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5915132U (en) * 1982-07-19 1984-01-30 三洋電機株式会社 Discharge prevention device
JPS63180704A (en) * 1987-01-21 1988-07-25 Natl Space Dev Agency Japan<Nasda> Multistage opening valve
JP2004297141A (en) * 2003-03-25 2004-10-21 Nippon Hoso Kyokai <Nhk> View history acquisition system in data broadcast, transmitter, and receiver

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