TW197513B - Method and control circuit for safe-coding process - Google Patents

Method and control circuit for safe-coding process

Info

Publication number
TW197513B
TW197513B TW81107431A TW81107431A TW197513B TW 197513 B TW197513 B TW 197513B TW 81107431 A TW81107431 A TW 81107431A TW 81107431 A TW81107431 A TW 81107431A TW 197513 B TW197513 B TW 197513B
Authority
TW
Taiwan
Prior art keywords
safe
eeprom
microprocessor
coding process
code
Prior art date
Application number
TW81107431A
Other languages
Chinese (zh)
Inventor
Jyh-Cherng Jang
Original Assignee
Vetronix 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 Vetronix Corp filed Critical Vetronix Corp
Priority to TW81107431A priority Critical patent/TW197513B/en
Application granted granted Critical
Publication of TW197513B publication Critical patent/TW197513B/en

Links

Landscapes

  • Control Or Security For Electrophotography (AREA)
  • Safety Devices In Control Systems (AREA)
  • Control By Computers (AREA)

Abstract

1. A method for safe-coding process employing a microprocessor, connected with a copying switch and an EEPROM, to control the execution of unlocking the safe door by means of master code or operational code by (a) storing master code in EEPROM (b)storing operational code in EEPROM (c) copying operational code into microprocessor when power failure happens (d) overwriting the master code into microprocessor when user turns on a copying switch. 2. A control circuit for safe-coding process including a microprocessor, a led display circuit, a led driver, a motor, a motor driver, a key board an EEPROM, and a copying switch.
TW81107431A 1992-09-21 1992-09-21 Method and control circuit for safe-coding process TW197513B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW81107431A TW197513B (en) 1992-09-21 1992-09-21 Method and control circuit for safe-coding process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW81107431A TW197513B (en) 1992-09-21 1992-09-21 Method and control circuit for safe-coding process

Publications (1)

Publication Number Publication Date
TW197513B true TW197513B (en) 1993-01-01

Family

ID=51356408

Family Applications (1)

Application Number Title Priority Date Filing Date
TW81107431A TW197513B (en) 1992-09-21 1992-09-21 Method and control circuit for safe-coding process

Country Status (1)

Country Link
TW (1) TW197513B (en)

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