说明：  提出了一种能防止多次试探密码的基于单片机的密码锁设计和实现方案。首先给出了用 户提出的10条总体要求和功能，然后比较详细地介绍了实现该要求的硬件和软件的设计过程，其中包 括单片机型号的选择、硬件设计、软件流程图、单片机存储单元的分配、汇编语言源程序及详细注释 等内容，并且给出了完整的硬件电路图、软件流程图和源程序。
(A test on many occasions to prevent the password locks based on single-chip design and implementation of the program. First of all, users are given 10 overall requirements and functions, and then a more detailed description of the achievement of the required hardware and software design process, including the single-chip models, hardware design, software flow chart, Microcontroller the allocation of memory cells, assembly language source code and detailed notes and other content, and gives a complete circuit of the hardware, software flowcharts and source code.)