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)。
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).
本文给出了一用于跟踪控制的单板微计算机硬件设计方法及其具体逻辑电路。
The hardware designing method and the concrete logic circuit of single board microcomputer for tracking controll are given.
组成计算机的是逻辑电路。
事实证明，随着电路规模的增大和功能的增强，采用计算机辅助分析和设计取代传统的手工方法，是实现逻辑电路分析设计的不可缺少的重要手段。
In fact, alongside the growth of circuits scale and function, it is inexorable trend that we replace tradition manual operation by computer assistant electronic circuit analysis and design.
一种开始于1964年左右并使用逻辑电路技术组件(集成电路)的计算机。
A computer that began in about 1964 and USES logic technology component (integrated circuit).
电子计算机是由具有各种逻辑功能的逻辑部件组成的，加法器就属于其中的组合逻辑电路。
A computer is comprised of some logic parts which have serial logic functions, and the adder is one of the combine logic circuits.
在工程实践中利用中规模集成电路设计组合逻辑电路需要在设计理念和方法上做一定的改进，以适应工程设计计算机化和工程实际的要求。
It needs to have new ideas and ways in design to use Mid-scale integrate circuit to improve the Combined Logical circuit in engineering to meet the requirements of computerizing engineering design.
操作表示机是计算机联锁系统中关键的人机界面设备，硬件上利用继电器组成的逻辑电路，实现双机热备的倒机逻辑控制和设备接口电缆的动态切换。
Therefore it is necessary to perfect the existing relay equipment based on the rule of fault-safety in order to achieve the function of railway signal computer-based interlocking control system.
操作表示机是计算机联锁系统中关键的人机界面设备，硬件上利用继电器组成的逻辑电路，实现双机热备的倒机逻辑控制和设备接口电缆的动态切换。
Therefore it is necessary to perfect the existing relay equipment based on the rule of fault-safety in order to achieve the function of railway signal computer-based interlocking control system.
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