485 are way communication. Through 485 to control a group of light switches.

使用PIC16F628和U2280构建的门禁控制机,有原理图-use PIC16F628 and U2280 Access Control Construction machine, a schematic diagram

数模转换器和模数转换器在单片机系统中的应用：AD转换器和DA转换器在MCS-51系列单片机系统中的应用-DAC and ADC in Single Chip System: AD converters and DA converters in the MCS-51 Series Single Chip System

此程序为单片机开发过程中的按键扫描程序。采用汇编 语言编写，经调试通过。-procedure for microcontroller development process button scanning procedures. Using language compilation, debugging through.

这是无线传感器网络用的操作系统tinyos-1.1.0,未来的世界将是它呵-This is the wireless sensor networks using the operating system tinyos- 1.1.0, the future world will love it

键盘测试程序，包括显示 、去抖动、扫描、检测，（8051或8031）-keyboard testing procedures, including, to jitter, scanning, detection, (8051 or 8031)

将演示数据先写入24C04芯片内，再将其数据逐个读出送P0口LED显示。-Data will demonstrate the first to write 24C04 chip, and then read out the data sent by P0 I LED display.

用VC++6.0实现PC机与单片机之间的数据交换-VC 6.0 PC and SCM data exchange between the

IC卡读写程序,内有终端PCB及原理图.爱好者可以看一下.也许会有所帮助.-IC card reading and writing process, there are terminal PCB and schematic. Lovers can look at. Maybe be helpful.

Rabbit 适合什么人使用呢？它是最适合于快速开发的，编程语言是Dynamic C ,是源码开放的，并且提供丰富的函数。-Rabbit suitable for anyone used? It is best suited to rapid development, programming languages is the Dynamic C, is open source, and provides a wealth of function.

美国ISD公司的ISD4000系列的ISD4002录放程序 -The United States ISD