这是一个电子钟的设计源程序,可以实现摇控功能,LCD2402

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

51mcu开发板原理图，天祥电子 -Development board schematics, Intertek e-0000

HT16512 是VFD（真空荧光显示）控制器件，内部RAM 直接对应VFD 驱动器的显示单元，其还 具有其他的一些功能，使其更便于开发使用。主控制器与HT16512 接口只需4 根线。本文将以HT48R10A-1 为例，介绍如何控制HT16512。 通过三根线数据写入

各位朋友，本人买的12864液晶屏已经调试通过，下面是源程序，无偿奉献，有需要的赶快下啊，这可花了我一个星期啊(jjcool)-friends, I bought the 12864 debug screen has passed, Below are the source, with the dedication that are needed quickly under ah, it could take me a week ah (jjcool)

制版软件PROTEL99的封装库文件,-Engraving Software package library file PROTEL99

AVR系列单片机AD转换程序，适用于atmega8,atmega16,atmega128.-AVR microcontroller series AD converter applies to atmega8, atmega16. atmega128.

时钟芯片PCF8563 C51程序，本人测试通过-Clock Chip PCF8563 C51 procedure, I test

移植好的系统，通过调试－－－－给需要者-Transplantation good system, through the debugger to those who need it----

本文件是单片机开发板STK500的使用说明，与大家共享-The present document is a single chip using the STK500 development board that share

有关于pwm控制的一个例子,基于8051f020的一个例子.-Pwm control on an example, based on 8051f020 an example.