stm32f4xx_flash

通过反转法循环扫描矩阵键盘，并通过数码管显示数据(By inversion method cyclic scan matrix keyboard, and through the digital display data)

51单片机模拟PS2鼠标KEIL C51程序，单片片机采用STC12C系列，代码注释详细， (51 single-chip analog PS2 mouse KEIL C51 program, a single piece of machine with STC12C series of code comments in detail,)

说明：  简单的lcd1602显示代码，说明通俗易懂(Simple lcd1602 display code)

使用51单片机，用其内部定时中断，和外部中断只找一个可控脉宽调制信号PWM(Using 51, with its internal timer interrupt, and external interrupt only to find a controllable pulse width modulation signal PWM)

买的一块开发板的开发文档、原理图还有PCB板，并且附有PCI9054的驱动程序及上位机测试应用程序，调试时需要安装Windriver。(Development board to buy a piece of the development of documents, there are PCB board schematics, and with the PCI9054 PC drivers and test applications, when the need to install debug Windriver.)

stm32下跑通usb外设，编译环境基于keil(stm32 next run through usb peripherals, based on keil compiler environment)

上位机发送数据包，下位机实现简单数据接，然后可以存储到其他位置(PC to send data packets, lower machine simple data connection, which can then be stored in a different location)

通过单片机输入程序来对步进电机进行控制，以此实现一定功能。(Stepping motor single chip microcomputer)

MMA系列加速度计MMA7660数据采集与处理程序，是基于X128单片机(MMA series accelerometer MMA7660 data acquisition and processing procedures, is based on X128 microcontroller )

说明：  器件参数：ATMega16/32，内部8.0000Mhz 实现功能：红外解码(IR Decoding source code source code integrity, and can be used directly.)