The Federal Communication Commission (FCC) covers radio and TV transmission and interstate telephone and telegraph.

联邦通讯委员会(FCC)管理广播和电视的传递以及州际电话和电报。

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The Federal Communication Commission ( FCC ) covers radio and TV transmission and interstate telephone and telegraph.

联邦通讯委员会（ FCC ） 管理广播和电视的传递以及州际电话和电报。

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Scanning was first used in the transmission of pictures by telegraph.

最先应用扫描法是用电报传播图像。

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Working for Bell Laboratories, Nyquist (among other things) set out theories regarding telegraph speed and transmission that would pave the way for future digital audio developments.

ENGADGET: Primed: digital audio basics Mobile

In 1874, Edison invented the quadruplex telegraph, which allowed the transmission of two signals in each direction down one wire.

FORBES: How You Can Profit From Thomas Edison's Inventions