The Design of Electronic Combination Lock That Its Password Can Be Changed
Abstract: In view of the old mechanical lock with the characteristics of simple structure, poor security and poor confidentiality, so I put forward the design scheme that makes the AT89S52 and E2PROMAT24C02 as main control chip and data storage unit .This design makes AT89S52 microcontroller as the core of system, which are composed of matrix keyboard, LCD display and alarm system and other several parts. The user can set the password and change it many times to close and save the password at any time. It improves the privacy and the security of personal information and the department documents, and the design of electronic combination lock has the characteristics of safe and practical, which meets the requirement of residential, office of a lock and can be developed as a product.
Key Words:AT89S52; Trick lock; The single chip microcomputer design; Electronic lock
目 录