key

能从SD卡读取MP3文件，并且识别后通过LD3320播放MP3，具体使用只需新建一个.ini系统文件存在sd卡，在里面设置好关键词并且所需播放的MP3文件即可(Read MP3 files from the SD card through the LD3320 play MP3 and identify specific use simply create a new the ini system files sd card exists inside set keywords and required to play MP3 files can)

电池保护板检测，检测电池的电压、电流和温度代码。 (Battery protection board testing, test the battery voltage, current and temperature code.)

LTM公司芯片的时钟配置资料。内容很详细清楚！(LTM chips clock configuration data. Content is more clear!)

说明：  数字滤波器，AD采样的值进行数字滤波，得到较理想的值(Digital filters, AD sampling the value of the digital filter, to be more ideal value)

AT89C51控制步进电机，实现正反转加减速，驱动芯片是ULN2803.(AT89C51 control the stepper motor to achieve reversing acceleration and deceleration, the driver chip is the ULN2803.)

与单片机接通,实时获得室内温度和湿度数据的程序(Connected with the microcontroller, real-time access to the indoor temperature and humidity data of the program)

在STM32F4平台上移植的ucos-ii和ucgui,很适合正在学习ucos-ii和ucgui的朋友(On STM32F4 porting ucos-ii and ucgui, very suitable for studying ucos-ii and ucgui friend)

18B20电路图,温度传感器，汇编版与C语言版共有及51开发板上的连线(The 18B20 schematic, temperature sensor, assembly version of the C language version of Total and 51 development board of the connection)

cc2530zigbee芯片英文资料，数据手册(cc2530zigbee chip information in English, Data Sheet)

AD转换芯片源程序。串行模式通信。。带电路(AD conversion chip source. Serial mode of communication. . Band circuit)