The days of sending letters are gone. Today, contacting people from any part of the world is much easier than before with the use of computers, handsets and the internet. People can communicate through phones, calls, text messages, e-mails, or social media platforms. Telecommunication has simply made keeping in touch with loved ones more convenient, efficient, and also cost-effective.
- Telecommunication technology allowed astronauts on the Moon to communicate with the people of earth.
- Communications satellites are used for telecommunication. Satellite phones vary in size, but all believe a satellite network.
- Cell phone towers are used for telecommunications.
- A GSM telephone is a telecommunication device.
- Telecommunication networks allow military units to be controlled by remote headquarters through command and control systems.
- A heliograph is an optical telegraph that uses a mirror to reflect light to mimic a sign lamp.
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