Test_array_length

说明：  只有音频采集模块的软硬件，不包括主控制板部分，软件编程使用的Keil软件，有相应的注释，便于学习。(Only the hardware and software of the audio acquisition module, excluding the main control board, are included. Keil software is used in software programming. It has corresponding annotations for easy learning.)

按键控制PWM占空比，利用按键控制PWM的占空比调节直流电机转速，LED显示(Key control PWM duty ratio)

说明：  基于点阵屏的51单片机贪吃蛇小游戏，附带多种功能。非keil工程，使用codeblocks+sdcc编译，代码与keil工程有些许不同。(Based on the dot matrix screen 51 MCU Snake game, with a variety of functions. For non keil projects, code blocks + Sdcc are used to compile. The code is slightly different from keil projects.)

Battery management system for up to 15 Li-ion cells based on bq76940 or bq76930 IC from Texas Instruments

北京迪文智能液晶屏驱动程序及其范例，是开发智能串口液晶屏很好的资料。范例中有画点、划线、画圆以及图片下载存储等驱动。(Beijing Di Wenzhi to LCD driver and the example of the development of intelligent serial LCD screen very good information. Pictures in the sample point, line, draw a circle, and picture download storage drive.)

变压器油色谱在线监测的论文，详细介绍了在线监测系统的各个模块。包括上位机和下位机。(Line monitoring of transformer oil chromatography paper, the details of each module of the online monitoring system. Including PC and the next machine.)

24F6Y外文 外置字库AVR SPI 读取程序(FONT AVR DRIVER)

51单片机的设计实例，利用51单片机在实际应用中的景丹例程，供初学用。(51 microcontroller design example, use SCM in the practical application of King Dan routines for beginners to use.)

测量USB电压电流，5秒轮流显示，数字接近5V的为电压，另外一个为电流(Measurement of USB voltage and current, 5 second rotation display)

8个单片机小程序，对串口、中断的学习很好理解。(8 SCM applet, the serial interrupt learning well understood.)