2×2 VGA视频分配器图纸，Protel 99生产。

/************************************************************* 文件名: autocp2.c 主题: autocp-2 型智能水泵控制器程序 Ver 1.2 修改日期 2001/12/21 修改内容: 将1 型的井水位检测由井内改到水箱的出水口处, 刚开机时延时5 秒检测.-/******************************* Name : autocp2.c theme : autocp-2 smart pump controller procedures Ver 1.2 Revision Date q310703 revisions : a type of well water testing by the change to the well bore the tank outlet, the irruption of aircraft detection latency five seconds.

msp320F247单片机的AD采样及液晶1602显示-msp320F247 SCM AD sampling and liquid crystal display 1602

学习单片机的一本比较好的入门书，不但讲述基本的指令操作，典型应用可以作为不错的参考-learning MCU a good entry, not only about the basic operating instructions, a typical application can be used as a good reference

用485实现单片机之间的串行通信。 从机部分一直等待主机的命令，接收到就发响应信号，然后接受数据，接受成功就用液晶显示-MCU with 485 Serial Communication between. From the plane of the mainframe have been waiting for the orders received on the response signal and then receive data on the successful use of acceptable LCD

这是原创的基于PIC16F877A单片机的读SD卡文件系统程序源代码-This is the original PIC16F877A microcontroller-based SD card file system read source code

该程序比较好用容易修改，是一个单片机应用类的一个很好的程序。-Comparison of the program easy-to-use changes is a single-chip applications of a good type of procedure.

详细介绍了以太网收发器RTL8019芯片，中文文档，免除了读英文文档的痛苦和低效-Described in detail RTL8019 Ethernet transceiver chip, Chinese documents, eliminating the pain of reading the document in English and inefficient

基于单片机c8051F020开发环境下的计数器程序代码-C8051F020 development environment based on the single-chip counters under the code

modbus 通讯程序 物理层rs-485-Modbus communication procedures rs-485 physical layer

基于AVR单片机mega8的电表c源程序（第五部分，存储记录电能数据，读取脉冲量，及其他）-Based on the AVR Microcontroller mega8 meter c source code (part V, storing records energy data, read the pulse volume, and others)