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JPS51138344A - Memory device - Google Patents

Memory device

Info

Publication number
JPS51138344A
JPS51138344A JP50062685A JP6268575A JPS51138344A JP S51138344 A JPS51138344 A JP S51138344A JP 50062685 A JP50062685 A JP 50062685A JP 6268575 A JP6268575 A JP 6268575A JP S51138344 A JPS51138344 A JP S51138344A
Authority
JP
Japan
Prior art keywords
memory device
bit
selecting
device capable
present
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.)
Granted
Application number
JP50062685A
Other languages
Japanese (ja)
Other versions
JPS5725918B2 (en
Inventor
Kenji Hayashi
Satoru Shindo
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 JP50062685A priority Critical patent/JPS51138344A/en
Publication of JPS51138344A publication Critical patent/JPS51138344A/en
Publication of JPS5725918B2 publication Critical patent/JPS5725918B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Techniques For Improving Reliability Of Storages (AREA)
  • Hardware Redundancy (AREA)
  • For Increasing The Reliability Of Semiconductor Memories (AREA)

Abstract

PURPOSE: A memory device capable of selecting a spare bit if a faulty bit is present.
COPYRIGHT: (C)1976,JPO&Japio
JP50062685A 1975-05-26 1975-05-26 Memory device Granted JPS51138344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50062685A JPS51138344A (en) 1975-05-26 1975-05-26 Memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50062685A JPS51138344A (en) 1975-05-26 1975-05-26 Memory device

Publications (2)

Publication Number Publication Date
JPS51138344A true JPS51138344A (en) 1976-11-29
JPS5725918B2 JPS5725918B2 (en) 1982-06-01

Family

ID=13207376

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50062685A Granted JPS51138344A (en) 1975-05-26 1975-05-26 Memory device

Country Status (1)

Country Link
JP (1) JPS51138344A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5625300A (en) * 1979-08-08 1981-03-11 Sharp Corp Switching controller for memory block
JPS57500128A (en) * 1980-02-12 1982-01-21
JPS5750396A (en) * 1980-09-09 1982-03-24 Matsushita Electric Ind Co Ltd Semiconductor memory device
JPS58150190A (en) * 1982-03-02 1983-09-06 Nippon Telegr & Teleph Corp <Ntt> Storage device
JPS61286948A (en) * 1986-03-19 1986-12-17 Sharp Corp Switching controller for memory block

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4922050A (en) * 1972-04-24 1974-02-27
JPS4923546A (en) * 1972-05-01 1974-03-02

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4922050A (en) * 1972-04-24 1974-02-27
JPS4923546A (en) * 1972-05-01 1974-03-02

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5625300A (en) * 1979-08-08 1981-03-11 Sharp Corp Switching controller for memory block
JPS57500128A (en) * 1980-02-12 1982-01-21
JPS5750396A (en) * 1980-09-09 1982-03-24 Matsushita Electric Ind Co Ltd Semiconductor memory device
JPS58150190A (en) * 1982-03-02 1983-09-06 Nippon Telegr & Teleph Corp <Ntt> Storage device
JPH0136136B2 (en) * 1982-03-02 1989-07-28 Nippon Telegraph & Telephone
JPS61286948A (en) * 1986-03-19 1986-12-17 Sharp Corp Switching controller for memory block

Also Published As

Publication number Publication date
JPS5725918B2 (en) 1982-06-01

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