VFRIC

详细介绍PID控制原理，展示了PID控制器的控制表达式。(The PID control principle is introduced in detail, and the control expression of the PID controller is shown.)

STM32的U盘存储例程，用keil4编译。(U STM32 disk storage routines, using keil4 compiler.)

通过EC获取CPU的运行温度，对CPU的运行温度进行实时监控，超过会自动报错，并可以设置监控时间(read CPU s temperture by EC)

电协开发板 C51单片机程序，用于实现单片机的流水灯输出(Electric Association C51 microcontroller development board procedures for the realization of single-chip light water output)

基于cortex M3的IIc24C02读写数据，在群星系列单片机上验证通过！(Cortex M3 based on the IIc24C02 read and write data to validate the Stars Series MCU through!)

7620摄像头采集程序（飞思卡尔128芯片）(7620 camera acquisition program (the Freescale 128 chip))

七段LED数码管显示译码器设计，将输入的16位二进制数据分别输出到4个数码管上(Seven-segment LED display decoder design, the input of 16 binary data are output to the four digital tube)

MC9S12系列单片机的学习的资料，里面包括了其重要的技术模块及编程技巧，能帮助大家更好的了解和使用这款单片机(MC9S12 series MCU learning materials, including its important technical modules and programming skills, to help people better understand and use the single chip microcomputer )

Memory extends Preference Activity implements On Cancel Listener.

说明：  spi模拟i2s，实现音频播放，网上的参考，不易找到，供大家分享(spi simulation i2s, for audio playback, online reference, easy to find for people to share)