嵌入式开发工具的使用方法，以及使用中搜遇到的问题

arm7 lpc2132 GPIO driver for beep

单片机AT90S系列 制作简易USB接口（软件模拟,无usb硬件）。 programmer- Monolithic integrated circuit AT90S series manufacture simple USB connection (software simulation, non- usb hardware). Programmer

PROFIBUS-dp PROGRAMS 主从站源程序 -PROFIBUS-dp PROGRAMS source master and slave stations

基于AVR单片机mega8的电表的C程序（第二部分，时钟及其他）-Based on the AVR Microcontroller mega8 meter of C procedures (the second part, the clock and others)

通用的LCD显示的子程序,汇编语言的,还可以-General of the LCD display subroutine, the compilation of language, but also

I2C的源代码,经本人测试通过,完全没有任何错误-I2C source code, as I tested, there is no any error

自己写的PWM 模拟比较等 AVR16的子程序 供大家参考-Write your own, such as analog comparator PWM Subroutine for the AVR16 U.S. reference

芯片PCF8951共有四个A/D输入通道：AD0，AD1，AD2，AD3,分别与四个电位器(R1,R2,R3,R4)连接，用以调节电位器的输出电压。其中AD0通道既可测量电位器输出电压，也可用于测量从J1插座输入的外接电压，须用开关J2加以选择。J4插座提供由PCF8591输出的时钟方波信号。SAA1064驱动四个数码管显示一路AD转换后得到的数据。-PCF8951 chip, there are four A/D input channels: AD0, AD1, AD2, AD3, respectively, with four potentiometers (R1, R2, R3, R4) connected to regulate the output voltage potential. AD0 channel which can be measured potentiometer output voltage can also be used to measure the input from the J1 socket external voltage, to be used to select switch J2. J4 socket output from the PCF8591 clock square wave signal. SAA1064 drivers of four digital display along after AD conversion data.

提供了LED点阵显示的Proteus仿真电路，和汇编代码。-LED dot matrix display provides a simulation circuit of the Proteus, and assembly code.

硬盘作MP3,用IDE接口的旧硬盘,加入51系列的单片机和显示屏,可以作一个有个性的MP3,-Hard drive for MP3, using the old IDE interface hard drives, adding 51 series of single-chip computer and display, can be used as a personality MP3,