A design scheme of motion control system based on parallel port of computer was proposed.
提出了一种基于计算机并行口的运动控制系统的设计方案。
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。
At last it discusses the principle of AE source location and constructs the hardware structure of locating via multi-passages switch and parallel port of computer.
最后讲解了声发射源定位的原理和通过多路开关、计算机并行口构建多通道源定位系统的硬件结构。
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