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Multisim10的DAC原理仿真演示。采用两个计数器级联成8位计数器，然后进行DAC转换。转换前后的结果分别用数码管和示波器显示。对理解DAC的原理非常有帮助。(This simulation contains two digital counters to generate 8-bit output to DAC, both digital number and analog values are dispayed. It is helpful to understand the principal of DAC.)

NUC100最小系统！此包含48PIN和100PIN！(Support 8G SD card, personally TESTED!)

android listview下拉刷新示例源码下载

简单指南针,实现指南针的功能，新手使用 Android Studio(Simple compass, realize the function of compass, novice use)

TFT彩色液晶屏底层驱动代码，已经封装好了，可以直接调用。基于89c52单片机。(TFT color LCD screen underlying driver code has been packaged well, can be called directly. Based 89c52 microcontroller.)

TI三相电能表源程序，有很高的参考价值！(TI source three-phase energy meter, has a very high reference value!)

自己利用ＰＳＣＡＤ搭建的ＭＭＣ三相变换器，包括了电容预充电过程。(The MMC using PSCAD build their own three-phase converter, including a capacitor pre-charging process.)

android 视频通讯源码 android 视频通讯源码

基于qt开发的GPS功能应用程序，可在android平台上运行；需要在necessitas开发环境下编译。(Qt-based application developed by the GPS function, you can run on android platform need necessitas development environment compiler.)

This is a simple bootloader for AT91SAM7 processors. It permits you to download new code to the device over USB. This bootrom is installed at address 0x00000000 in the ARM, which means that it is the first piece of code to execute after reset. At startup, it waits for a few seconds to see if the downloader is trying to connect. If not, then the bootloader gives up control and jumps to your program. If the downloader is trying to connect, then the bootloader receives the new program over USB and writes it into flash.(This is a simple bootloader for AT91SAM7{S,X}{64,128,256} processors. It permits you to download new code to the device over USB. This bootrom is installed at address 0x00000000 in the ARM, which means that it is the first piece of code to execute after reset. At startup, it waits for a few seconds to see if the downloader is trying to connect. If not, then the bootloader gives up control and jumps to your program. If the downloader is trying to connect, then the bootloader receives the new program over USB and writes it into flash.)