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The telegraph was the first device that could send messages far away and could only communicate using morse code.
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The Fax Machine is a device that sends and receives printed pages or images over telephone lines by digitizing the material with an internal optical scanner and transmitting the information as electronic signals.
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The Telephone was made by Alexander Graham Bell who sought a way to transmit speech anywhere and then made the Telephone. Its not expensive, is simple to operate, and is a immediate, personal way to communicate with someone.
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The first radio was made by Heinrich Hertz and used radio waves to transmit Morse code. It was used like a wireless telegraph until around the 1900 when they were used commercially.
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The Pager is a wireless telecommunications device that receives and displays alphanumeric or voice messages. One-way pagers can only receive messages, while response pagers and two-way pagers can also acknowledge, reply to and originate messages using an internal transmitter.
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The Walkie Talkie is a small portable radio which you can talk into and hear messages through so that you can communicate with someone far away. They're designed primarily for short-range communications, in which groups of people are within a few miles of each other. Businesses use walkie-talkies so that employees can chat efficiently in and around their indoor and outdoor structures.
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The Satellite Phone is a mobile two-way communication devices using satellites orbiting the Earth to receive and transmit data.
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The Motorola DynaTAC 8000X was the first handheld cellular phone that allowed people to make longer distance calls than just a landline phone. It did not require any lines or cords to be attached to make a call.
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The Cordless Telephone was made by George Sweigert is a telephone without the cord and use radio waves instead of a direct connection to a telephone line.
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The IBM Personal Computer is the first popular commercial PC and microcomputer released in the IBM PC line. it is the computer when we think of old computers and was the first modern PC.