由C 语言实现的液晶 利用的是KEIL环境已经得到验证

使用89S52为核心做的USB键盘,注意修改了一下windows设备描述符以及端点处理等就行了。用了一个4*4的小键盘,有0-9十个数字键, Num Lock键,Caps Lock键,Shift键,Ctrl键,Alt键,回车键等。 最多可以有三个键同时按下，如果相交的话，最多只能两个键按下-89S52 use as the core of the USB keyboard to do, pay attention to modify the look and the windows device descriptor, such as treatment endpoint on the list. Used a 4* 4 small keyboard, has the number keys 0-9 10, Num Lock keys, Caps Lock key, Shift key, Ctrl key, Alt key, enter key and so on. Can have up to three keys pressed at the same time, if the intersection, then a maximum of only two keys pressed

ARM9芯片片外启动的初始化以及中断处理程序-ARM9 chip, chip to start the initialization and interrupt handler

串口程序，内有详细的注释，是参考网上流传的串口调试助手写的，在此进行了分栏显示的改进，学习者也可以将其中的控件属性设置为可见，实现和串口调试助手一样的功能。-Serial process, with detailed notes, with reference to the spread of online serial debugging assistant written in this column have been shown to improve, learners can also control which property is set to visible, to achieve and serial debug Like assistant functions.

一个经典的电子钟程序，采用汇编语言编写，时钟芯片采用DS12C887，具有遥控器修改时间等功能-A classic bell electronic procedure for the preparation of assembly language, the clock chip DS12C887, with remote control features such as modified

动力环境监控系统 动力环境监控系统-Dynamic driving force for environmental monitoring system environmental monitoring system

单片机CRC算法程序-SCM CRC algorithm

这个是09年电子设计大赛时用NEC提供的专用电机驱动芯片MMC-1的驱动程序 已经调通- This is when the Electronic Design Contest in 2009 with the NEC to provide a dedicated motor driver chip MMC-1 drivers have been transferred Pass

可以测试0~25V的直流电压，有软件滤波，和小数点自动进位功能.-Can test the 0 ~ 25V DC voltage, a software filter, and the decimal point automatic feed-bit functionality.

//115.2k串行口通信程序，校验方式为简单双向校验, //而且是必要的，因为任何采用中断、crc等的方法 //均很难保证速度和避免错误. //总体速度5KB/秒 //单片机程序 //使用22.1184晶振-//115.2k serial port communication procedures and testing methods for the simple two-way check,// it is necessary, because any interruption used, the method crc// it is very difficult to ensure speed and avoid mistakes.// Overall speed 5KB/s// MCU procedures// crystal use 22.1184

这是AVR系列单片机1,教材及应用,解压密码是www.pp51.com-AVR