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Deskopt Roatry was and alambric telephone wich you had to roll the phone to reach your numbers.
Ciatation:
Krupa, Frederiq (1992). The Evolution of the Telephone System: From Bells Electric Toy to the Internet. Retrieved October 6, 2014 form: http://es.slideshare.net/mjlitwa/the-evolution-of-the-telephone -
This was an alambric phone wich you were able to write direcltly the numbers you wanted to calle in the 1960s.
Ciatation:
Krupa, Frederiq (1992). The Evolution of the Telephone System: From Bells Electric Toy to the Internet. Retrieved October 6, 2014 form: http://es.slideshare.net/mjlitwa/the-evolution-of-the-telephone -
This was an telephone in the 1970 that was attached to the wall. It didnt need energy.
Ciatation:
Krupa, Frederiq (1992). The Evolution of the Telephone System: From Bells Electric Toy to the Internet. Retrieved October 6, 2014 form: http://es.slideshare.net/mjlitwa/the-evolution-of-the-telephone -
This was the First Inalambric telephone. you had digital numbers to call directly in the 1980s.
Ciatation:
Krupa, Frederiq (1992). The Evolution of the Telephone System: From Bells Electric Toy to the Internet. Retrieved October 6, 2014 form: http://es.slideshare.net/mjlitwa/the-evolution-of-the-telephone -
The Firs Mobile celular was invented in 1983. This CellPhone didnt need connection.
Ciatation:
Krupa, Frederiq (1992). The Evolution of the Telephone System: From Bells Electric Toy to the Internet. Retrieved October 6, 2014 form: http://es.slideshare.net/mjlitwa/the-evolution-of-the-telephone -
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This was an inovation of the cellhone that was much smaller.
Ciatation:
Krupa, Frederiq (1992). The Evolution of the Telephone System: From Bells Electric Toy to the Internet. Retrieved October 6, 2014 form: http://es.slideshare.net/mjlitwa/the-evolution-of-the-telephone
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