REMINDER

Please, remember to participate in the surveys posted to your right. The results will be analyzed in class later.
Also, be kind and comment on your mates' posts and finally don't forget that Sunday it's your last day to post on mobile phones.
Thanks :)

CELL PHONES BY AYEEE :D

Mobile phones

Mobile phones had begun in 1973….. Like others have told you before, but I will talk about the impacts that mobile phones made in people and the problems that cell phones can make on us.
The Scandinavian health authorities have run continuous long term studies of effects of mobile phone radiation effects to humans, and in particular children. Numerous studies have reported no significant relationship between mobile phone use and health. But one study that reviewed the link between cell phones and sperm quality found that heavy mobile phone users (4 hours per day) had significantly less viable sperm (who morphology score was less than half of the lower time mobile phone users). A prospective study of 13 normal men found that significantly increasing their mobile phone use (6 hours each day for 5 days) caused a marked short-term reduction of sperm quality. Men who use mobile phones on a regular basis lose about 30 percent of their active sperm cells. Those who carry their mobile phones in pockets of their pants are putting their potency at great danger. Scientists say that even in sleep mode mobile phones are harmful.
Another thing that I won’t to say is that cell phones make us being addictive because we are all the time looking on our phones and, in some cases of course if we don’t have our phones we feel strange.
My opinion is that cell phones are really useful because you can be communicated with your family and if you are alone and something happens to you, you can call somebody. By ayee.

Mobile phones xD

Well,by this time our teacher asked us to write something about the revolution of mobile phones or just something about them.In this case i'd like to write something about the history of these phones and how they evolutioned into the latest ones.

1973
Motorola touts a prototype of the world's first mobile cellular phone, the Motorola DynaTAC 8000X. It's more than a foot long, weighs nearly 2 pounds and sells for $4,000. However, it wasn't commercially available until a decade later.

1982
Finish handset maker Nokia introduces its first mobile phone, the Nokia Mobira Senator. The device looks very much like a portable radio and it weighs a whopping 21 pounds.
1993
BellSouth/IBM unveil the world's first mobile phone with PDA features, including phone and pager functionality, calculator and calendar applications, as well as fax and e-mail capability. The BellSouth/IBM Simon Personal Communicator weighs 21 ounces and sells for $900.

1996
Motorola debuts its StarTAC mobile phone, merging fashion and functionality into the cell phone. It weighs 3.1 ounces--light by even today's standards--and it is a clam shell device.

2000
Kyocera introduces its QCP6035 mobile phone, the very first widely available Palm OS-based phone. It costs between $400 and $500 but only included 8MB of memory.

2002
Sanyo and Sprint make the Sprint SCP-5300 PCS available, and both companies claim it's the first mobile phone in the United States to include a digital camera. Image quality is, however, less than impressive.

2004
Motorola announces its RAZR v3 cell phone and starts a trend toward ultra-thin, stylish phones that's still influencing mobile device manufacturers today.

2006
The BlackBerry Pearl 8100 is the first from RIM to include a digital camera and media player and it's also the smallest, thinnest BlackBerry--currently, the company's 8800 series of devices are the thinnest it offers.

2007
Apple releases the iPhone, a beautifully designed device that includes an innovative--and much hyped up-touch screen navigation interface.
Well here you can see de diference between the old DynaTac and the new Iphone.

In my opinion the mobile phone really changed the society. All the world is more communicated and people have less difficulties in finding someone.But this brings some disadvantages too,people lose a lot of verbal communication because of this and reaching some critical level this destroys friendships and other relationships.But I personally think if people had a more mature vision on what they are doing and the harm they are doing to themselves, this problem would never become common.

Laj* ^^

RING RING, Mobile Phones.

Well, this is my second post; a text about mobile phones. Our teacher asked us, to do a text about this invention, which changed the world. I want to write first of all about how it changed the society.

The first mobile phone was created in 1973. Before the mobile phones, the computers.

It has been a technological revolution since then.

The first phone is from 1876, at that time, no one had this new technology at home, it was impossible to call a friend, the only way to get communicated with another town was by mail, and it took at least a week to get the answer. We can't compare this with now, when if I want to send a message to my cousin in Brazil, it only takes two minutes with my cellphone: I write the message, write the number and then press the "send" button .

If we think about the efficiency of the cell phones, it is great: I can get communicated with anyone, anywhere, anytime.

We know that the human being is a social creature, we have to live with other human beings. We have to get involved in relationships and learn how to live with others...

But we have to ask ourselves... Is or is not the cellphone separating us from the world? I mean, I talk with a lot of friends every single day, using my cell phone, that I don't remmember the last time I really saw them. This situation makes me wonder if mobile phones are something positive or not. This small box, which contains a lot of keys, is isolating us from the REAL relationships.

In some way this is my opinion... But also I think that this invention is very useful. I just think that we shouldn't depend on it. I accept that I can't go out without my cell phone but I also meet my fiends and my family, I talk with them personally and not only using my mobile phone...

Today in Argentina there are 12 million mobile phones working, in Brazil there are more than 30 million, only in the USA there are 200 million. In the world there are ONLY (hehe) 1237 million cell phones working at this moment...

This is all for now :) see you soon =)

mari =)

Mobile Phones

Many years ago...


two-way radios were used in vehicles such as taxicabs, police cruisers, ambulances for a faster communication, 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.

In 1947, Douglas H. Ring and W. Rae Young proposed hexagonal cells for mobile phones. Philip T. Porter proposed that the cell towers be at the corners of the hexagons rather than the centers and have directional antennas that would transmit/receive in 3 directions into 3 adjacent hexagon cells.
The first fully automatic mobile phone system, called MTA (Mobile Telephone system A), was developed by Ericsson and commercially released in Sweden in 1956. This was the first system that didn't require any kind of manual control, but had the disadvantage of a phone weight of 40 kg. MTB, an upgraded version with transistors, weighing 9 kg, was introduced in 1965.
In 1967, each mobile phone had to stay within the cell area serviced by one base station throughout the phone call. This did not provide continuity of automatic telephone service to mobile phones moving through several cell areas. In 1970 Amos E. Joel, Jr. invented an automatic "call handoff" system to allow mobile phones to move through several cell areas during a single conversation without loss of conversation.

FIRST GENERATION MOBILE PHONES (1G)
The first commercial launch of cellular telecoms was launched in 1979. In 1981 the NMT system was launched in Denmark, Finland, Norway and Sweden. This was the first mobile phone technology that allowed international use of the mobile phone or so-called "roaming".

SECOND GENERATION MOBILE PHONES (2G)
The first pre-commercial digital cellular phone call was made in the Unites States in 1990, in 1991 the first GSM network opened in Finland. 2G phone systems were characterized by digital circuit switched transmission and the introduction of advanced and fast phone to network signaling.

THIRD GENERATION MOBILE PHONES (3G)
Not long after the introduction of 2G networks, projects began to develop third generation (3G) systems. Inevitably there were many different standards with different contenders pushing their own technologies. Quite differently from 2G systems, however, the meaning of 3G has been standardized in the IMT-2000 standardization processing.

My opinion

I think that mobile phones are very important to communicate for example if you have broken a leg or just to say "mum, take me at the school, please". With a cell phone you can save lifes and you can talk with people you can never see. Many people use the portable phones to work. But like all the things, the mobile phones have an other side, "a bad side". Some people are addict to the cell phones and they can´t live without them. They are always using the phones, and I believe that is bad to be dominated by a piece of plastic! They depend everyday of the calls they receive or they make. In this respect life many years ago, without mobile phones, was better.
I have a lot of friends that always says "my cell phone is an essential item. I send text messages the whole day", and I can´t believe it!
I think that many times portable phones destroy great moments.

This is my research and my opinion about mobile phones.

Santi

Mobile Phones!

Although mobile phones have taken over our current society, they have been around for several decades in some form or another. Beginning in the late 1940s, the technology that would later be used in today’s cell phones was created and the idea of a mobile phone was introduced. This cell technology was first used in mobile rigs which was mainly used in taxis, police cars and other emergency vehicles and situations. Truckers also used a form of this technology to communicate with each other. Little did they know how far their idea would advance to make it accessible to the majority of the population.
The first mobile phones were introduced to the public market in 1983 by the Motorola Company. These first mobile phones used analog technology.

In my opinion the mobile phone really changed the society. All the world is more communicate. But we can see a lot of people that is depraved. We can use cell phone but with consideration.

Eve*

mobile phones :D

In 1950s the car phones appeared. These phones were very useful but they had some disadvantages. They were very big and heavy. Also people could make only two calls before the car battery went dead. In 1973 Mr Cooper took out his portable phone and made a call to a rival phone company while he was walking along a street in New York.
Ten years later came out a portable phone called "DynaTAC 8000x". At that time this new technology was awesome, but comparing it to nowadays it is the worst thing you can imagine xD.

Along the years these mobile phones became very popular. Now most of the people have al least one cell phone and they do everything with them. They can go to the internet, take pictures, watch videos, listen to music and lots of other things. People is very ambitious with this kind of things because they always want to have the newest, expensive and most popular phone. 10 years ago nobody thought this would happen. These phones help the people a lot, buy they also have disadvantages. People are depending much more on this technology and they are losing a lot of things like friends, family, pesonal communication, etc. They prefer playing with their portable phones than being with friends. I think is very important and useful to have a cell phone, but we have to use them with moderation.

Luquitas