89C52 direct control LCD1335, very simple to use!

红绿灯模拟C程序，用于51单片机，用keil编译，适合二次开发。-Traffic simulation program for C compiler, 51 SCM keil, suitable for secondary development.

就像在嵌入系统中使用C语言替代汇编一样,在嵌入系统中使用RTOS是大势所趋。原因主要是现在在大多数情况下编程效率比执行效率重要（单片机便宜嘛）。但纵观51的RTOS，keil c51 所带的RTX Full 太大（6k多），且需要外部ram，又无源代码，很多时候不实用。RTX Tiny虽然小（900多字节），但是任务没有优先级和中断管理，也无源代码，也不太实用。而ucosII虽有源代码，但是它太大，又需要外部ram，所有函数又必须是重入函数，用在51这类小片内RAM的单片机上有点勉强。于是，我借鉴ucosII和RTX Tiny编写了Small RTOS 51,虽然它为51系列编写，但是它还是比较容易移植到其它CPU上。 -err

该时钟以24小时制显示时间，并可显示2000年至2049年之间的任何日期及星期，日期与时间经按键可相互切换，可输入8个闹钟时间设置，每个闹钟设置包括响铃的时间（小时与分钟）、对工作日有效还是对周末有效的标志，以及本项设置是否启用的标志等三部分。这8个闹钟设置均保存在EEPROM中，即使掉电也不用重新输入。-The 24-hour clock to display time, and shows from 2000 to 2049 and any date between the weeks, the date and time as may be mutually switch button, enter the eight alarm time settings, each set including the ringing of an alarm clock Duration (hours and minutes), the effective working days or weekends effective road signs, as well as whether or not to enable this setting, such as a symbol of three parts. This 8 alarm settings are stored in EEPROM, even brown-out do not have to re-enter.

射频卡资料，对射频卡分类、应用、开发工具等都有较为详细的介绍。-RF card, RF card classification, applications, development tools, and others have a more detailed introduction.

51单片机写的程控滤波器，是07年电子大赛的 很多功能没有实现 望高人改正-51 single-chip microcomputer program written filter, is the e-Competition in 2007 did not materialize, many functions of an expert look correct

串口控制8路舵机程序,本程序适用于III型实验板，如有需要请与我联系-Serial 8-way steering control procedures, this procedure applies to type III board and, if necessary, please contact me

C51单片机电表程序下载测试程序,用于电表的内部程序下载-C51 microcontroller meter download test procedures for the internal procedures meter Download

此程序为单片机编程，主要实现无线收发功能，所使用的无线芯片为PTR4000。-This procedure for single-chip programming, the main function of wireless transceivers used for wireless chips PTR4000.

对金鹏的ocmJ4X8C系列LCM，和单片机进行串口通信的C语言程序。能实现任意位置输入汉字和字符，实现绘图，显示光标和反白；光标和显示移位。-Jinpeng ocmJ4X8C series of the LCM, and single-chip serial communication to the C language program. Able to realize anywhere to input Chinese characters and the characters realize the drawing, showing the cursor and anti-white the cursor and display shift.