"基于ATMega 16单片机的密码锁设计：安全便捷的新选择"

cts have high security, the cost is also high. The installation and carrying are not convenient, which limits their development. This paper uses ATMega 16 microcontroller to design a password lock system. The system includes a 4x3 keypad and a seven-segment display. In addition to basic functions such as password verification, reset, and error alert, this system also innovatively redefines the keypad. By redefining the keypad, the system can effectively prevent password theft, reduce cost, and make installation and carrying more convenient. Keywords: ATMega 16 microcontroller, password lock, keypad, seven-segment display, redefinition. 随着科技的发展，人们对安全问题越来越关注。为了解决安全问题，越来越多的安全产品问世，比如指纹防盗系统、红外防盗系统等。虽然这些产品具有较高的安全性，但成本也较高，安装和携带都不方便，限制了其发展。本文利用ATMega 16单片机设计了一个密码锁系统。该系统包括一个4x3键盘和一个七段数码管显示屏。除了基本功能如密码验证、重置和错误提示之外，该系统还创新地重新定义了键盘。通过重新定义键盘，系统可以有效防止密码被盗，降低成本，并使安装和携带更便捷。 关键词：ATMega 16单片机，密码锁，键盘，七段数码管，重新定义。