JPS5389623A - Voltage display unit of backup power source - Google Patents

Voltage display unit of backup power source

Info

Publication number
JPS5389623A
JPS5389623A JP391577A JP391577A JPS5389623A JP S5389623 A JPS5389623 A JP S5389623A JP 391577 A JP391577 A JP 391577A JP 391577 A JP391577 A JP 391577A JP S5389623 A JPS5389623 A JP S5389623A
Authority
JP
Japan
Prior art keywords
power source
backup power
display unit
voltage display
main battery
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
JP391577A
Other languages
Japanese (ja)
Inventor
Naoya Seki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP391577A priority Critical patent/JPS5389623A/en
Publication of JPS5389623A publication Critical patent/JPS5389623A/en
Pending legal-status Critical Current

Links

Landscapes

  • Power Sources (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Stand-By Power Supply Arrangements (AREA)

Abstract

PURPOSE: To make the life of a main battery long by reducing the load of the main battery, by operating the display circuit by the auxiliary battery when the voltage of the main battery is below the normal voltage in the backup power source used for the contents protection of non-volatile memory used in the computer system.
COPYRIGHT: (C)1978,JPO&Japio
JP391577A 1977-01-19 1977-01-19 Voltage display unit of backup power source Pending JPS5389623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP391577A JPS5389623A (en) 1977-01-19 1977-01-19 Voltage display unit of backup power source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP391577A JPS5389623A (en) 1977-01-19 1977-01-19 Voltage display unit of backup power source

Publications (1)

Publication Number Publication Date
JPS5389623A true JPS5389623A (en) 1978-08-07

Family

ID=11570459

Family Applications (1)

Application Number Title Priority Date Filing Date
JP391577A Pending JPS5389623A (en) 1977-01-19 1977-01-19 Voltage display unit of backup power source

Country Status (1)

Country Link
JP (1) JPS5389623A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6320228U (en) * 1986-07-22 1988-02-10

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6320228U (en) * 1986-07-22 1988-02-10

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