How it works

Find out how this stuff actually works via a range of interactive activities designed to be fun and informative.

Telegraph

The telegraph was the first device of the telecommunications age.

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The telephone came about as scientists tried to squeeze more out of the telegraph.

Wireless was the next significant step in telecommunication after the telephone.

Strictly speaking, the computer wasn't designed as a telecommunications device.

What's on

Visit the updated Communicate! galllery at the National Museum of Scotland.

Partner in profile

Discover the records behind the history of telecommunications as BT Heritage launches online catalogue.