本程序是通过74HC573锁存器控制八个数码管，给大家参考。

用S1实验板 P1口的8个发光管每隔2个右循环点亮 -Experiments with S1 plate P1 mouth every 8 LED 2 right circle lit

用汇编编写的密码锁，proteus仿真，程序，原理图全套，希望对需要的人有用-Compilation prepared by using locks, proteus simulation, procedures, a full set of schematic diagram, in the hope that those who need it useful

DOS死机客星，能打破程序死循环，按住Ctrl +Esc即可使死掉的程序立即返回到Dos She-DOS crashed off satellite, to break cycle of death procedures, press Ctrl Esc will die so the procedure to return immediately to Dos She

这是我最近制作的，想仍大家评论一下-This is my recently produced, we still would like to comment on the

电子密码锁，报警，修改密码，输入三次错误自动结束。-Electronic password lock, alarm, change your password, enter the three errors automatically end.

4*4键盘扫描按键，依据按键值，一个LED显示相应键值-4* 4 keyboard scan button, based on key values, an LED display the corresponding key

手把手教asm,hex文件下载 S2实验板 AT89C51 12M晶振 实验2-10进制调整指令数码管从00-FF显示-手把手教asm, hex file download S2 experimental experimental crystal plate AT89C51 12M adjust instruction 2-10 hexadecimal digital tube display from 00-FF

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bios源代码，请对底层的代码有兴趣看下吧-bios source code, the code of the underlying interest Kanxia Bar

本代码主要是用于在显示系统上实时显示：时，分，秒，-the code is mainly used in the real-time display system shows : when, minutes and seconds.