STC12C5A60S2_AD

通过GPIO口，模拟I2C协议，和设备进行I2C通信(I2C communications via GPIO ports, analog I2C protocol, and equipment)

基于STM32的信号发生器（定时器控制），频率 占空比 峰峰值可调，输出最大频率30k (STM32-based signal generator (timer control), the frequency duty cycle peak and peak adjustable, the maximum output frequency of 30k)

keil4 89c52 MAX7219点阵原理图.pdf MAX7219英文.pdf MAX7219中文.pdf MAX7219.uvproj max7219.hex(keil4 89c52 MAX7219Lattice schematic diagram.pdf MAX7219EN.pdf MAX7219CN.pdf MAX7219.uvproj max7219.hex)

freescale hc12_C32 例程(Freescale hc12_C32 routines)

振幅调制,角度调制，频率调制等几个源程序，模拟通信系统(Amplitude modulation, angle modulation, frequency modulation, such as source code, analog communication systems)

利用GPIO控制无源蜂鸣器发声，播放音乐。使用SysTick延时，使用位带操作寻址IO口引脚。(GPIO is used to control the voice of passive buzzer and play music. Use SysTick delay, use bit band operation to address IO pins.)

it is keil-c program for run lcd on lpc1768 ECA.com

说明：  msp430单片机的电压表程序。用430的ad转换在用数码管显示电压值(msp430 microcontroller voltmeter program. The ad with the 430 conversion voltage value with a digital LED display)

STM32F103RBT6和W5200网络芯片的服务期端的测试程序，减少了很多不必要的设置，测试更方便(W5200 STM32F103RBT6 and end of service network chip testing procedures, to reduce a lot of unnecessary settings, the test is more convenient)

51单片机实现PT100温度测量程序，采用恒流源测量原理(Realization of PT100 temperature measurement program by 51 single chip microcomputer)