一个很好用的密码锁程序，MCU用的是EM78P447，经试用非常可靠，提供给想学习EMC的用户使用，如有需要原理图的请发邮件到micheal23@sohu.co...

在keil-ARM环境下对ARM7处理器编译成功的I2C总线程序，程序通过I2C总线向UART串口发送数据，验证了I2C总线程序的正确性。-Keil-ARM in the circumstances of the ARM7 processor to compile the success of I2C bus procedures, procedures for the adoption of I2C serial bus to send data to the UART, I2C bus to verify the correctness of the procedure.

针对小容量单片机的任务调度，不必使用操作系统，做小项目很合适-For small capacity single-chip task scheduling, do not have to use operating system, is very suitable to do small projects

单片机串口通信的简单例程，供需要的人参考-A simple microcontroller serial communication routines for those who need it for reference

CRC16 源程序，MODBUS的校验程序-CRC16 source, MODBUS calibration procedures

凌阳的LCD演示原码,里面还有LCD的使用说明.-Sunplus LCD presentation of the original code, along with LCD instructions.

普通有刷直流电机PWM闭环控制C51完整源程序-Brush DC Motor has ordinary PWM closed-loop control C51 complete source

改进中的数码显示灯0000--9999 实验名: 八个数码管显示 功 能:让实验板上八个数码管循环显示0-9十个数 硬件环境: 自制单片机实验板， 软件环境: Windows操作系统 使用软件：伟福 V3.20, Easy 51Pro v2.0-To improve the digital display lights in the 0000- 9999 Experiment name: eight digital display Function: 8 to allow on-board digital tube experiments showed that the cycle number of 10 0-9 Hardware environment: self-made single-chip board, Software Environment: Windows operating system The use of software: Fu Wei-V3.20, Easy 51Pro v2.0

单片机IDE3000的指导手册，第二版，内含指令集和集成环境的使用方法-SCM IDE3000 instruction manuals, the 2nd edition, containing instruction set and integrated use of the environment

A/D转换器ADC0832驱动程序，该程序属于A/D的基础程序，可以调用该函数来实现A/D转换-A/D converter ADC0832-driven program, which belongs to A/D based program, you can call this function to achieve the A/D converter

这是北京福星晓程公司的PL3105电力载波通信程序，在KEIL环境下开发。用于电力载波通信的应用，比如，电力载波抄表-This is the way Beijing