AT88RF256的射频识别卡与基站的程序，与芯片文档，非常难得

凌阳061a单片机的中断使用例程。包括外部中断例子-Sunplus 061A MCU interrupt routine use. Including external interrupt example

单片机控制步进电机，有详细的电路图和源代码，希望大家喜欢-Single-chip stepper motor control, has detailed schematics and source code, I hope everyone likes

采用Maxim公司的Max267芯片实现的滤波电路 欢迎下载-using Maxim"s Max267 chip welcome the filter circuit download

pc键盘控制好好123456789 单片机控制啊-pc keyboard control SCM 123456789 ah well

ad9833的原理图和源程序，希望对需要的人有用-AD9833 Schematic and source of hope for those who need it useful

Frecuencymeter digital, clk frequency 10 MHZ, exhibition in 7 segments

开发人员易用的一款进制转换计算器 能大大加快大家的开发速度-developers to use the new base for the conversion calculator you can greatly accelerate the pace of development

六位电子密码锁 采用89s52（51，52都可），4*4键盘，六个数码管，74ls04（位选），573（8D锁存器）。 说明：P2---数据（接573）―――（接数码管） P1---位选 ---（按74ls04） P0--4*4键盘 密码一次性设置（编程时写入的） 电路简单，此源程序仅供初学者学习，可自行扩展密码模块（加24C02）。 编绎软件为wave -six electronic password lock used 89s52 (can be 51, 52), 4* 4 keyboard, six digital control, 74ls04 (EC), 573 (8D latches). Note : P2-- Data (573 )---( access digital access control) P1 Choice------ (74ls04 ) P0-- 4* 4 keyboard set up a one-time password (into programming) circuit is simple, This program is for beginners learning will be able to expand password module (CO2 plus 24). Sounds series software wave

次文章是介绍ad9851应用的，文章详细介绍了9851的功能和与51单片机的接法，还有c程序.-Second article is to introduce the application of the AD9851, the article introduced in detail the functions and 9851 MCU with 51 connection, there are c procedures.

由"晓风"编写的PLD入门的好教材：pld.rar（中文PDF文档）-from "feng" prepared by the entry PLD good material : pld.rar (Chinese PDF)