Phone

Phone or telephone is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly. A phone converts sound, typically and most efficiently the human voice, into electronic signals suitable for transmission via cables or other transmission media over long distances, and replays such signals simultaneously in audible form to its user.

History

The telephone was invented by Alexander Graham Bell who applied for his patent on the phone, at the US Patent Office, in 1876. The modern telephone is the result of work done by many people, all worthy of recognition of their contributions to the field.

Types of Phones

There are different types of phones including:

• Landline - This is the traditional phone that uses a physical wire to connect to the network.

• Mobile Phone - This is a portable phone that uses wireless technology to make and receive calls.

• Smartphone - This is a mobile phone that combines cellular and mobile computing functions into one unit.

• Satellite Phone - This is a type of mobile phone that connects to orbiting satellites instead of terrestrial cell sites.

Function

The telephone operates by converting the sound waves of the human voice into electrical signals, which are then transmitted via a network of wires and cables to another telephone where the signals are converted back into sound.

Impact on Society

The invention of the telephone has had a significant impact on society. It has made communication faster and easier, and has opened up new opportunities for business and social interaction.

See Also

• Telecommunication
• Mobile Phone
• Smartphone
• Satellite Phone

References

Phone Resources
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