People have to use the digital logic circuit "build" into a special computer numerical control machine tool real as a system, the hardware connecting numerical control, or not numerical control (NC).

人们不得不采用数字逻辑电路“搭”成一台机床专用计算机实作为数控系统，被成为硬件连接数控，简称未数控(NC)。

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This article introduced the numerical control piano keyboard machine discussed, PLC servo system working principle, design of hardware and software of the whole system.

介绍了数控钢琴键盘加工机中的P LC和伺服系统的工作原理及整个系统的硬件和软件的设计。

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This paper developed a practical system software of microcomputer numerical control system based on the analysis of the hardware construction and principle of the AC servo X - Y table.

本文针对微机数控交流伺服X-Y工作台的硬件结构以及其工作机理，介绍了一套可实际应用的微机数控交流伺服系统软件的开发。

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