基于51单片机的交通灯控制系统 IDE：Keil uVision2

该程序是判断某年是否是闰年，即输入任何一年份，若是闰年，则输出闰年，若不是，则输出不是闰年。

VC++ -VC++ VC++

89c2051 外部中断检测 通过max232与PC通讯 发送数据-89c2051 through max232 Detect external interrupt communication with the PC to send data

汇编语言的准备知识- Assembly language preparation knowledge

字母小到大---汇编-alphabetical small to large compilation

1621的应用,在很多系统中经常见到这种应用,现给大家参考.-1621 applications, in many systems we often see this application, it is for your reference.

PIC源程序头文件-PIC source files

一个比较简单的汇编语言-编程~希望看到信用卡会在心里订明~不过只是在稍微好一点的基础上

AT89C2051时钟程序 -AT89C2051 clock procedures

3、编写口令程序 要求： 1) 口令是随系统时间而变动的。（在输入口令前应先把当时的系统时间显示在屏幕上） 2)口令输入有次数限制。（口令与时间有关，但不能直接输与显示在屏幕上时间的数值，应进行运算。 3)、口令输入正确后进入选歌菜单，可选3首以上歌曲，可任意停止返回菜单。-3, the preparation of password procedures require: 1) The password is with the system changes over time. (Enter the password in the system at that time before the time displayed on the screen) 2) have a limited number of password input. (Password and time, but should not direct transmission and display on the screen time value calculations should be carried out. 3), enter the correct password selected songs backward menu options for more than three songs, free to stop the return of the menu.