RDA5807M

基于51的C语言频率计，内涵仿真图，以实现空能(Based on 51 C-language frequency meter, meaning simulation diagram, in order to achieve air can)

語音的16bit PCM Data 轉成PWM方式輸出(Voice of 16bit PCM Data converted into PWM mode output)

51单片机考勤系统下位机程序，可以配合上位机软件实现考勤功能，将hex文件下载到51单片机即可使用(51 MCU control procedures can be achieved with the PC software attendance function, the hex file into the microcontroller 51 can be used)

诺基亚5110的驱动程序，主要用于单片机的开发，充当显示模块。(Nokia 5110 driver, mainly for single-chip development, act as a display module.)

说明：  读写SD卡的头文件，MMC，不含fat文件系统。(Read and write SD card.)

ad_da 数电——模电 转换,单片机应用子程序(ad_da transformation)

说明：  一个基于kinect的鼠标小程序~~~用vs2008环境(A small program based on kinect mouse ~ ~ ~ with the vs2008 environment)

模拟版图的艺术，layout，区别于普通的pcb版图。属于微电子行业的设计，相关工具有laker、cadence等等(The art of analog layout, layout, layout pcb from ordinary. Belonging to the design of micro-electronics industry, the relevant tools laker, cadence, etc.)

只能车中将摄像头采集的图像通过无线收发(使用行中断)(Only car of the camera images collected through a wireless transceiver (use line breaks))

pt100高精度测量电路，精度误差小，速度快，arm9 c51均可实现 ，仅供学习 参考(PT100 high precision measurement circuit, precision error is small, fast, C51 ARM9 can be achieved, only for learning reference )