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history of cell phones
Transcript of history of cell phones
Evolution and technological convergence
The mobile phone evolution has reduced its size and weight, from the first mobile phone in 1983 that weighed 780 grams, to the current more compact and higher performance of service. The development of smaller batteries and longer, sharper screens and colors, incorporating more user-friendly software, mobile phone make a very appreciated in modern life.
The advancement in technology made these gadgets incorporate features that not long ago appeared futuristic, like games, MP3 music playback and other formats, email, SMS, PDA, digital photography and videodigital, video calling, web browsing and to digital TV.
First generation of cellphones
The first generation ranging from the appearance of the first cell phone in the world market known as "the brick" (DynaTAC 8000X) to late 80s. These were characterized as analog technology for restricted use of oral communications. The predominant technology in this generation was the AMPS (Advanced Mobile Phone System)
Second generation of cellphones
The second generation makes its appearance in the 90s, are mostly digital technology and have certain benefits highly valued as extended battery life, more segurosy possibility of higher definition sound. These phones, and some analog phones, have the possibility of sending and receiving text messages (SMS), however, is not yet over the years the "boom" of this tool in recent years has been crowded so amazing. A late fever occurs by cell phones, ordinary people are added to the list of users, favored by the exchange rate and competition between different companies.
Predominant technologies: GSM (Global System for Mobile Communications), IS-136 (also known as TIA/EIA136 or ANSI-136) and CDMA (Code Division Multiple Access) and PDC (Personal Digital Communications), the latter used in Japan .
Third generation of cellphones
It is characterized by the above technologies together with new tecnologíasincorporadas on cell phones. Inauguration of the massification of cell phones. In recent years cell phones are equipped with a chip, SIM card, where all the information entered.
One of the most important causes of the spread in consumption able to reach the company's humble existence in the GSM handset market so-called "low-level" as the Nokia 1100, Sagem XT, Motorola C200 or C 115, Alcatel, Siemens A56 or Sony Ericsson T106, all at very affordable prices and surrounded by promotions.
This is the first cell phone in history, the grandfather of the ones we know today. His name is Motorola DynaTAC 8000X and first appeared in the year 1983. It was heavy, 28 ounces (about 780 grams) and measuring 33 "x 9" x 4.5cm. ". Obviously it was analog, and had a small LED display. The battery was only for an hour of talk or 8 hours stand -by.'s quality sonidoera very bad, was heavy and unattractive, but still, there were people who paid the USD $ 3.995 that cost, which turned it into a luxury item and only available to certain social spheres, even though of its design and weight.