By supporting on the platform of wireless network communication combined with audio, visual, data, the port MIS spreads the mobile computer terminals into the operation site of port front.
使得港口经营业务管理信息系统（MIS）在语音、视频和数据三合一的无线网络通讯平台上，将移动计算机终端拓展到港口码头前沿的作业现场。
For the GPS low speed serial data, this paper makes use of the computer serial port to receive directly, and the program of the serial receiving and network transmitting are realized by VC.
对于GPS低速串口数据，直接用计算机串口接收，用VC编程实现了串口接收和网络转发。
The parallel port of computer is mainly used for connecting to printer, the data transmission rate is rapid because the data is transferred in parallel.
计算机并口主要用来连接打印机，由于数据并行传输，所以传输速度相对较快。
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