JPS6336998U - - Google Patents
Info
- Publication number
- JPS6336998U JPS6336998U JP12693686U JP12693686U JPS6336998U JP S6336998 U JPS6336998 U JP S6336998U JP 12693686 U JP12693686 U JP 12693686U JP 12693686 U JP12693686 U JP 12693686U JP S6336998 U JPS6336998 U JP S6336998U
- Authority
- JP
- Japan
- Prior art keywords
- prom
- socket
- impedance
- detection circuit
- becomes
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Read Only Memory (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
Description
第１図はこの考案による実施例の構成図、第２
図はこの考案による主要部回路図、第３図は第２
図の作用説明図。 １……ソケツト、２……検出回路、３……カウ
ンタ、４……インピーダンス、２１……比較器。
図はこの考案による主要部回路図、第３図は第２
図の作用説明図。 １……ソケツト、２……検出回路、３……カウ
ンタ、４……インピーダンス、２１……比較器。
Claims (1)
- 【実用新案登録請求の範囲】 ＰＲＯＭをソケツトに挿入すると、前記ＰＲＯ
Ｍの特定ピンのインピーダンスが接続されて「１
」を出し、前記ソケツトから前記ＰＲＯＭを取り
出すと、前記インピーダンスの接続が外れて「０
」を出す検出回路と、 前記検出回路から「１」が出るたびに「１」を
加算していくカウンタとを備えることを特徴とす
るＰＲＯＭ用ソケツトの使用回数チエツク装置。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12693686U JPS6336998U (ja) | 1986-08-20 | 1986-08-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12693686U JPS6336998U (ja) | 1986-08-20 | 1986-08-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6336998U true JPS6336998U (ja) | 1988-03-09 |
Family
ID=31021210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12693686U Pending JPS6336998U (ja) | 1986-08-20 | 1986-08-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6336998U (ja) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5758640U (ja) * | 1980-09-24 | 1982-04-06 | ||
| JPS57191893A (en) * | 1981-05-20 | 1982-11-25 | Hitachi Ltd | Control system for life of earom |
-
1986
- 1986-08-20 JP JP12693686U patent/JPS6336998U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5758640U (ja) * | 1980-09-24 | 1982-04-06 | ||
| JPS57191893A (en) * | 1981-05-20 | 1982-11-25 | Hitachi Ltd | Control system for life of earom |