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This paper gives a simple and practical telegram interface circuit.

介绍了一种简洁、实用的收发电报接口电路,很好地解决了电报终端的改造问题。

This paper first reviews the establishment of modern Chinese telecommunication, then discusses how telegram infulenced the political scene of the late Qing Dynasty, and especially indicates that it was the telegram which was used by revolutionists to oppose the Qing Dynasty.

通过回顾近代中国电讯业的创设,可以看出电报这种传媒手段在清末政治生活中的重要作用。

The paper introduces the transformation of DK7720B WEDM machine with telegraph terminal interface,realizing the communication between WEDM CNC system and the computer with CAXA software,so as to make full use of the merits of CAXA software and accomplish the upgrading of old equipments.

本文介绍一种利用电报头接口改造旧电火花线切割机床,通过CAXA软件实现线切割数控系统与计算机的通信,充分发挥CAXA绘图式自动编程软件的优点,实现旧设备的升级改造。

An electric leakage alarm network system based on CAN was designed,in which remote(monitoring) terminal,control station and central monitoring PC were served as bottom,medial and top unit(individually).

设计了一套基于CAN总线的漏电报警网络系统,系统包括远程监控模块、中间控制柜机、中央监控主机三个层次,各层间均采用CAN总线通信。

Application of the precise integration method in the solutionof telegraph equations;

精细积分法在电报方程求解中的应用

In this paper,the distributed capacitance and inductance of non-uniform microstrip line are extracted by FDTD method combining with telegraph equations.

利用FDTD方法结合电报方程对非均匀微带线的分布电容电感进行了提取,研究了不同介电常数衬底下微带线的分布电容电感以及相应的特性阻抗,并得到了分布电容电感、特性阻抗随结构参数的变化规律。