JPS6482391A - Prom writing device - Google Patents
Prom writing deviceInfo
- Publication number
- JPS6482391A JPS6482391A JP23959287A JP23959287A JPS6482391A JP S6482391 A JPS6482391 A JP S6482391A JP 23959287 A JP23959287 A JP 23959287A JP 23959287 A JP23959287 A JP 23959287A JP S6482391 A JPS6482391 A JP S6482391A
- Authority
- JP
- Japan
- Prior art keywords
- prom
- receptacle
- information
- mounting
- voltage drop
- 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
Landscapes
- Read Only Memory (AREA)
Abstract
PURPOSE:To prevent erroneous information from being written or a PROM from being damaged by providing a PROM presence/absence discriminating device for discriminating whether the PROM is currently mounted or not in a selected PROM mounting receptacle S. CONSTITUTION:The PROM presence/absence discriminating device D for discriminating whether the PROM is mounted or not is provided. Namely, a current detecting resistance R is inserted between the power supply terminal E of the PROM mounting receptacle S and a +5V power source and when the PROM is not mounted on the PROM mounting receptacle S, a voltage drop is not generated in the resistance R, but when it is mounted on the receptacle S, the voltage drop is generated according to a current flowing through the PROM. The information of a PROM mounting condition is transmitted to a writing information input means I by the use thereof. Thereby, the writing of the erroneous information or the damage of the PROM can be prevented.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23959287A JPS6482391A (en) | 1987-09-24 | 1987-09-24 | Prom writing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23959287A JPS6482391A (en) | 1987-09-24 | 1987-09-24 | Prom writing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6482391A true JPS6482391A (en) | 1989-03-28 |
Family
ID=17047063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23959287A Pending JPS6482391A (en) | 1987-09-24 | 1987-09-24 | Prom writing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6482391A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07169289A (en) * | 1993-12-13 | 1995-07-04 | Nec Corp | Continuously writing device copying with unspecified writer and device |
US6145322A (en) * | 1998-05-29 | 2000-11-14 | The University Of Tokyo | Cryogenic coupler |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5766593A (en) * | 1980-10-13 | 1982-04-22 | Toshiba Corp | Prom protection circuit for erroneous insertion of prom vriter |
JPS58166594A (en) * | 1982-03-25 | 1983-10-01 | Mitsubishi Electric Corp | Writing device of programmable rom |
JPS6020099B2 (en) * | 1979-12-29 | 1985-05-20 | 株式会社小松製作所 | Automatic die change control device for press machines |
-
1987
- 1987-09-24 JP JP23959287A patent/JPS6482391A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6020099B2 (en) * | 1979-12-29 | 1985-05-20 | 株式会社小松製作所 | Automatic die change control device for press machines |
JPS5766593A (en) * | 1980-10-13 | 1982-04-22 | Toshiba Corp | Prom protection circuit for erroneous insertion of prom vriter |
JPS58166594A (en) * | 1982-03-25 | 1983-10-01 | Mitsubishi Electric Corp | Writing device of programmable rom |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07169289A (en) * | 1993-12-13 | 1995-07-04 | Nec Corp | Continuously writing device copying with unspecified writer and device |
US6145322A (en) * | 1998-05-29 | 2000-11-14 | The University Of Tokyo | Cryogenic coupler |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3281816A (en) | Polarity protected booster cable | |
AU6452894A (en) | Buttonless memory system for an electronic measurement device | |
JPS6426293A (en) | Coin detection means | |
KR870011479A (en) | Battery voltage display device of electronic equipment | |
MY111975A (en) | Battery charging system. | |
KR910018058A (en) | water purifier | |
JPS6482391A (en) | Prom writing device | |
WO2001054248A3 (en) | System and method accommodating more than one battery within an electronic device | |
JPS5717226A (en) | Integrated circuit | |
JPS5764398A (en) | Memory device | |
WO1996026482A3 (en) | System comprising an apparatus and a peripheral device for the apparatus, and an apparatus and a peripheral device for such a system | |
JPS5710824A (en) | Recording system electronic apparatus | |
DE69937245D1 (en) | BATTERY CARD ARRANGEMENT FOR ELECTRIC EQUIPMENT | |
JPS6460224A (en) | Excess current detection circuit for inverter device | |
JPS5710531A (en) | Level conversion circuit | |
JPS57147190A (en) | Memory circuit | |
JPS5766593A (en) | Prom protection circuit for erroneous insertion of prom vriter | |
JPS6425694A (en) | Ac contact defect preventing device | |
JPS644822A (en) | Electronic circuit device | |
JPS5793765A (en) | Booster battery detecting system | |
KR920008408B1 (en) | Circuit for charging batteries | |
KR940012746A (en) | Battery charging circuit | |
KR970055039A (en) | Operation status indicator of two-stage charging device | |
JPS5618375A (en) | Battery liquid level alarm | |
KR880006876A (en) | Housing information transmitter |