JPH0295451U - - Google Patents

Info

Publication number
JPH0295451U
JPH0295451U JP1989003068U JP306889U JPH0295451U JP H0295451 U JPH0295451 U JP H0295451U JP 1989003068 U JP1989003068 U JP 1989003068U JP 306889 U JP306889 U JP 306889U JP H0295451 U JPH0295451 U JP H0295451U
Authority
JP
Japan
Prior art keywords
memory
password
stores
main memory
section
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
JP1989003068U
Other languages
English (en)
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 filed Critical
Priority to JP1989003068U priority Critical patent/JPH0295451U/ja
Publication of JPH0295451U publication Critical patent/JPH0295451U/ja
Pending legal-status Critical Current

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  • Storage Device Security (AREA)

Description

【図面の簡単な説明】
第１図は本考案の一実施例を示す回路構成図で
ある。 １……主メモリ、５，８……メモリ部、１２…
…パスワード比較回路。

Claims (1)

    【実用新案登録請求の範囲】
  1. 主メモリと、予め特定のものに付与されるパス
    ワードを記憶する第１のメモリ部と、外部より入
    力されるパスワードが記憶される第２のメモリ部
    と、これら第１および第２のメモリ部の内容を比
    較するとともに両者が一致すると上記主メモリの
    データ読出しを許可するパスワード比較手段とを
    具備したことを特徴とするメモリの保護装置。
JP1989003068U 1989-01-13 1989-01-13 Pending JPH0295451U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989003068U JPH0295451U (ja) 1989-01-13 1989-01-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989003068U JPH0295451U (ja) 1989-01-13 1989-01-13

Publications (1)

Publication Number Publication Date
JPH0295451U true JPH0295451U (ja) 1990-07-30

Family

ID=31204376

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989003068U Pending JPH0295451U (ja) 1989-01-13 1989-01-13

Country Status (1)

Country Link
JP (1) JPH0295451U (ja)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63225841A (ja) * 1987-03-16 1988-09-20 Hitachi Maxell Ltd 半導体メモリ装置
JPS63279341A (ja) * 1987-05-11 1988-11-16 Nec Corp メモリ集積回路

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63225841A (ja) * 1987-03-16 1988-09-20 Hitachi Maxell Ltd 半導体メモリ装置
JPS63279341A (ja) * 1987-05-11 1988-11-16 Nec Corp メモリ集積回路

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