JPS51114832A - Memory chip backup unit - Google Patents

Memory chip backup unit

Info

Publication number
JPS51114832A
JPS51114832A JP50039199A JP3919975A JPS51114832A JP S51114832 A JPS51114832 A JP S51114832A JP 50039199 A JP50039199 A JP 50039199A JP 3919975 A JP3919975 A JP 3919975A JP S51114832 A JPS51114832 A JP S51114832A
Authority
JP
Japan
Prior art keywords
memory chip
backup unit
chip backup
memory
replacing
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
JP50039199A
Other languages
Japanese (ja)
Inventor
Hideo Maejima
Tadaaki Bando
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 JP50039199A priority Critical patent/JPS51114832A/en
Publication of JPS51114832A publication Critical patent/JPS51114832A/en
Pending legal-status Critical Current

Links

Landscapes

  • Hardware Redundancy (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE: The reliability is improved by replacing the faulty memory chip with a backup memory chip among memory cards constituting the main memory.
COPYRIGHT: (C)1976,JPO&Japio
JP50039199A 1975-04-02 1975-04-02 Memory chip backup unit Pending JPS51114832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50039199A JPS51114832A (en) 1975-04-02 1975-04-02 Memory chip backup unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50039199A JPS51114832A (en) 1975-04-02 1975-04-02 Memory chip backup unit

Publications (1)

Publication Number Publication Date
JPS51114832A true JPS51114832A (en) 1976-10-08

Family

ID=12546441

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50039199A Pending JPS51114832A (en) 1975-04-02 1975-04-02 Memory chip backup unit

Country Status (1)

Country Link
JP (1) JPS51114832A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4413365Y1 (en) * 1968-11-28 1969-06-04
JPS4830332A (en) * 1971-08-18 1973-04-21

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4413365Y1 (en) * 1968-11-28 1969-06-04
JPS4830332A (en) * 1971-08-18 1973-04-21

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