Abstract
Safe as people living or working in an integral and important facilities， mainly for the storage of various valuables，thus safe lock on the safety becomes critical. Currently on the market safe products use. Lock is the traditional mechanical turntable password lock. This password lock password volume and the complexity of dial-related. To ensure password volume, it is necessary to dial complex structure, very convenient. If the structure is simple, password volume of transactions through easy means to try to unlock the code, the safety factor is not high enough. But electronic password lock with password great quantity, Password mainly by a controller chip AT89C51 through programming to achieve their specific function.Programming with the password change for the sake of change greatly improving security.
According to the research theses conditions, the use of keystroke input SCM software decoder programs.Software simulation shows that the program can achieve better identification password, the password wrong alarm function meet basic password lock function.
