arm的spi功能，通过595点亮数码管

基于测距式的超声波测距仪，以AT89C51单片机为核心，精度高、有数字显示功能，实验精度达0.5CM-location-based ultrasonic range finder to AT89C51 core, high precision, digital display, experimental accuracy of up to mile

LPC单片机I2C编程-LPC SCM I2C programming

Small RTOS 51 DP－51下载仿真实验仪上实现一个闹钟的源代码。-Small RTOS 51 DP-51 download simulation instrument to achieve an alarm clock source.

I2C接口的ADC应用PCF8591，c51原代码。编译通过。-I2C Interface Converters application PCF8591 which, c51 original code. Compile.

AVR单片机六路ADC采集与七段数码管显示采集值-AVR Singlechip Lioulu ADC Acquisition and Seven-Segment LED display acquisition value

自制的数字电压表，用的的是AD0809这个芯片，希望能有用对大家。-Self-made digital voltage meter, is used in the AD0809 chip, hoping to be useful for everyone.

485端口抄表程序，通过485端口进行电表抄写-485-port meter-reading program, through the 485 meter port copying

由P89V51RB2单片机控制小车在翘翘板上寻找平衡点,装载倾角传感器.-By SCM P89V51RB2 car in the seesaw to find the equilibrium point, loading angle sensor.

实用的PIC单片机的单相双向电能芯片5460校准程序。-PIC MCU practical single-phase bi-directional power 5460 chip calibration procedure.

4*4键盘程序，来自msp430系列单片机-4* 4 keyboard procedures, from MCU Controller Series