As early as 1966, with the introduction of the first computerized word-processing system (I.B.M.’s Magnetic Tape Selectric Typewriter), secretaries were worrying that machines could replace them.

早在1966年，随着计算机化的文字处理机(I.B.M.磁带式自动打印机)的出现，秘书们就开始担心机器会代替他们，他们不再需要因为漏打一个字母而重新再打一页。

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This paper introduces the hardware and the software of microcomputer control system for sign typewriter on the railway vehicle bearing.

本文介绍铁道车辆轴承标牌打字机的微机控制系统的硬件结构和软件特点。

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