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方案，根据用户的１０条总体要求，给出了该单片机密码锁的硬件电路和软件程序，同时给出了单片机型号的选择、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。 -A test to prevent repeated password locks based on single-chip design, according to the general requirements of 10 are given the single-chip code lock hardware circuits and software programs, at the same time given a single machine models, hardware design, software, flow charts, single-chip memory cell of the distribution, assembly language source code and detailed notes, etc..