PIC18F4550 SD卡，USB

MCS51单片机串口程序，编译环境：keil 51-MCS-51 single-chip serial procedures, the compiler environment: keil 51

ID卡读写 （51的汇编程序）-ID Card Reader (51 compilation procedure)

这是一个就算波特率的软件，功能强大，在单片机通信时不用自己动手计算，只要用此软件点击一下，就能得到结果。-This is a software that even if the baud rate, powerful, in the MCU communicate without it-yourself basis, as long as the click with this software, you can get results.

单片机入门教材.zip-SCM entry materials. Zip

51单片机的波特率设置计算小工具。方便的计算值就可用波特率产生。-51 Baud Rate Setting small calculation tool. To facilitate the calculated values can be generated with baud rate.

用于蓝牙开发！基于hci的编程，可实现单片机对蓝牙模块的控制，从而实现蓝牙主从设备的连接和通信！-for Bluetooth development! Based on HCI programming can be realized right MCU Bluetooth module control, thereby achieving Bluetooth equipment from the main connection and communication!

this is a sensorless fan motor control code .(it use the angle-ahead commutate tech.)

pwm convter.it contains C sourse. has been modified.

自己写的 STM32 串口UART驱动, 不用固件库。超级终端界面按键时,自动回送。 应用范围: 因为不涉及IO口,所以此工程在STM32F1xx的任何主板上都可以运行。 编译器: IAR ARM 4.42A。 作者: w123456xy@sohu.com 15189792379。 -Write your own STM32 serial UART driver, no firmware library. HyperTerminal interface button, automatically send back. Application scope: because they do not involve IO port, so this works on any STM32F1xx motherboard can run. Compiler: IAR ARM 4.42A. Author: w123456xy@sohu.com 15189792379.

超声波测剧驱动 40KHZ 频率 范围达到50CM 以上-Ultrasonic measurement-driven drama 40KHz frequency range to reach more than 50CM