History:
At the beginning, two-way radios (known as mobile rigs) were used in some vehicles, but were not mobile phones because they were not normally connected to the telephone network. Users could not dial phone numbers from their mobile radios in their vehicles.
At the beginning, two-way radios (known as mobile rigs) were used in some vehicles, but were not mobile phones because they were not normally connected to the telephone network. Users could not dial phone numbers from their mobile radios in their vehicles.
During the early 1940s, Motorola developed a backpacked two-way radio, the Walkie-Talkie and later developed a large hand-held two-way radio for the US military. It was the size of a man’s forearm.
In 1970 Amos E. Joel, Jr., an engineer invented an automatic "call handoff" system to allow mobile phones to move through several areas during a single conversation without loss of conversation.
One of the first truly successful public commercial mobile phone networks was the ARP network in Finland, launched in 1971.
Dr. Martin Cooper of Motorola, made the first US analogue mobile phone call on a larger prototype model in 1973.
The first handheld mobile phone to become commercially available to the US market was the Motorola DynaTAC 8000X, which received approval in 1983.
In the 1990s, “second generation” mobile phone systems began to be introduced.
Not long after the introduction “second generation” of networks, projects began to develop third generation (3G) systems. Now they are available almost everywhere and, who knows, maybe there will be a “fourth generation” in a few years.
My opinion:
I think the mobile phones are a controversial thing, on the one side it helps people to communicate and help to save lives (for example: in a survival situation), but on the other side, it complicates it. I know, it seems incoherent, but to me it has a logic, because new mobile phones appear each year (not to say every month) and people always want to have the newest, most expensive and with more things on it, but they don’t know that this makes their life more complicated and more dependent on technology. Not to mention the pollution that this produces. As you might have guessed, I am not a mobile phone lover, but we live in a world of consumism and technology and I will have to live with this…
In the future:
I don’t believe in people who say that in the future mobile phones will fit in a man’s ear, but I think that they will succeed and be more complex with the pass of a few decades, or even only years, good luck grown-up walkie-talkie!
In 1970 Amos E. Joel, Jr., an engineer invented an automatic "call handoff" system to allow mobile phones to move through several areas during a single conversation without loss of conversation.
One of the first truly successful public commercial mobile phone networks was the ARP network in Finland, launched in 1971.
Dr. Martin Cooper of Motorola, made the first US analogue mobile phone call on a larger prototype model in 1973.
The first handheld mobile phone to become commercially available to the US market was the Motorola DynaTAC 8000X, which received approval in 1983.
In the 1990s, “second generation” mobile phone systems began to be introduced.
Not long after the introduction “second generation” of networks, projects began to develop third generation (3G) systems. Now they are available almost everywhere and, who knows, maybe there will be a “fourth generation” in a few years.
My opinion:
I think the mobile phones are a controversial thing, on the one side it helps people to communicate and help to save lives (for example: in a survival situation), but on the other side, it complicates it. I know, it seems incoherent, but to me it has a logic, because new mobile phones appear each year (not to say every month) and people always want to have the newest, most expensive and with more things on it, but they don’t know that this makes their life more complicated and more dependent on technology. Not to mention the pollution that this produces. As you might have guessed, I am not a mobile phone lover, but we live in a world of consumism and technology and I will have to live with this…
In the future:
I don’t believe in people who say that in the future mobile phones will fit in a man’s ear, but I think that they will succeed and be more complex with the pass of a few decades, or even only years, good luck grown-up walkie-talkie!
Marco
1 comment:
Great Job! Your research work is very good. It has all necessary information and makes it fun to be read. Congratulations again. Well done! Ana Claudia
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