用于测试步进电机，也用于控制步进电机来测试传感器等

低电压检测. A口低8位接键盘列线，键盘行线接VDDIO；B口高8位接LED // 按K1键 低电压为2.4v // 按K2键 低电压2.8v // 按K3键 低电压3.2v // 按K4键 低电压为3.6v

430中149单片机使用的UART的特殊用法，测试通过-430code

KeilC开发,51通过8255对外部4*4键盘进行控制.按键分别为0-9以及上下左右,加上确认取消.-KeilC development through 8255 to 51 4* 4 external keyboard control. Keys were 0-9 and above and below, coupled with canceled.

其中含有TSL230的驱动 和比较有用的资料 才做平台是利用STM32单片机-Contains TSL230 drive and more useful information in order to make the use of STM32 MCU platform is

DS18B20驱动程序,已通过实物认证.-DS18B20 driver has passed certification in kind.

电子密码锁程序，两键输入，其中一个键累加，另一个键确认。密码正确锁打开（开锁指示灯亮）；密码错误锁关闭（关锁指示灯亮）；连续错三次则锁定键盘8秒并发出报警声。-Electronic code lock procedure, the two key input, one key additive, and the other button to confirm. The correct password to open lock (unlock indicator light) password error lock closure (Kuan-lock indicator light) consecutive wrong then lock the keyboard three times and issued eight seconds alarm sound.

pid算法的源程序，这个程序很不错，是入门的很好帮助-pid algorithm source code, this procedure is pretty good, is a good entry-help

PIC16F87X在CAN通信中的应用，与MCP2510芯片通过SPI总线传输数据-PIC16F87X in CAN Communication with the MCP2510 chip through the SPI bus to transfer data

高速PCB设计资料，很好的东西，推荐下载-High-speed PCB design data, very good things, recommended download

DS18b20的运用，有示例代码，绝对可以运用-DS18b20 the use of sample code there is, is absolutely entitled to exercise