JPS6482391A - Prom writing device - Google Patents

Prom writing device

Info

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
Application number
JP23959287A
Other languages
Japanese (ja)
Inventor
Yoshimasa Kagawa
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.)
Fanuc Corp
Original Assignee
Fanuc Corp
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 Fanuc Corp filed Critical Fanuc Corp
Priority to JP23959287A priority Critical patent/JPS6482391A/en
Publication of JPS6482391A publication Critical patent/JPS6482391A/en
Pending legal-status Critical Current

Links

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  • 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.
JP23959287A 1987-09-24 1987-09-24 Prom writing device Pending JPS6482391A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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