Mobile Phone (Mari Zoidze)

        Prior to the development of mobile phones, people used two-way radios to communicate while they were mobile. The idea behind two-way radios gave rise to the invention of mobile phones.

      Nowadays, the mobile phone is so important to us that it’s hard to think of life without it. However, they're a relatively new invention. 

      On 3 April 1973, Dr Martin Cooper, who was a Motorola employee, placed a call to rival Joel Engel, who was head of research at AT&T. Doctor Martin made the call while he was walking the streets of New York & did so through the first Motorola DynaTAC prototype in front of journalists. 

      The earliest mobile telephones were dubbed first generation telephones, often referred to as 1-G. These devices were the very first real mobile telephones, although they were then known as cellular mobile radiophones, & were based on analogue signalling. The analogue signal was the main difference between these first generation mobile telephones & their second generation cousins, which came out a few years later. 

      Second generation (2G) digital cellular systems were first developed at the end of the 1980s. These systems digitized not only the control link but also the voice signal. Unlike 1-G phones that were analogue, 2G phones use digital signalling to provide voice services & for text messaging & WAP internet access. Some of the benefits of 2G phones are that they use lower radio signals, which require less battery power. This means that phones lasts a lot longer between charges.

      The earliest pre commercial 3G mobile phone network was launched in Japan in May 2001. Later, 3-G was released commercially in Japan on October 1 2001. 3G is the third generation of mobile phone standards and technology, which succeeded 2G mobile phone technology. The birth of 3-G technologies enabled network operators such as orange to offer their users a bigger range of advanced services. This includes broadband internet, as well as high tech video calls.

Mobile Phone (Nino Jijavadze)

     Mobile phones are used for a variety of purposes, including keeping in touch with family members, conducting business, and having access to a telephone in the event of an emergency. Some people carry more than one cell phone for different purposes, such as for business and personal use. Multiple SIM cards may also be used to take advantage of the benefits of different calling plans—a particular plan might provide cheaper local calls, long-distance calls, international calls. Some schools limit or restrict the use of mobile phones. Schools set restrictions on the use of mobile phones because of the use of cell phones for cheating on tests, harassment and bullying, causing threats to the schools security, distractions to the students, and facilitating gossip and other social activity in school. Many mobile phones are banned in school locker room facilities, public restrooms and swimming pools due to the built-in cameras that most phones now feature roaming. Mobile phones are also commonly used to collect location data. While the phone is turned on, the geographical location of a mobile phone can be determined easily (whether it is being used or not), using a technique known multilateration to calculate the differences in time for a signal to travel from the cell phone to each of several cell near the owner of the phone. The movements of a mobile phone user can be tracked by their government. Both the sim card and the handset can be tracked. The effect mobile phone radiation has on human health is the subject of recent interest and study, as a result of the enormous increase in mobile phone usage throughout the world. Mobile phones use electromagnetic radiation in the microwave range which some believe may  be harmful to human health. In addition, a mobile phone can spread infectious diseases by its frequent contact with hands. One study came to the result that pathogenic bacteria are present on approximately 40% of mobile phones belonging to patients in a hospital, and on approximately 20% of mobile phones belonging to hospital staff.

iPaD (Khatia Turmanidze)

                                                                        iPaD
        When you pick up iPad, it becomes an extension of you, it feels completely comfortable in your hand. And it makes surfing the web, checking email, watching movies and reading books so natural, you'll wonder why you ever did it any other way. You'll see two cameras on iPad __ one on the front and one on the back. They may be tiny, but they're a big deal. They're designed for Face Time video calling, and they work together so you can talk to your favorite people and see them smile and laugh back at you. The front camera puts you and your friend face-to-face. Switch to the back camera during your video call to share where you are, who you're with, or what's going on around you. iPad is one big, beautiful display - resolution photos, movies, web pages, books, and more. LED back lighting makes everything you see remarkably crisp, vivid and bright. Even in places with low light, like an airplane. And there's no wrong way to hold iPad. It's designed to show off everything in portrait and landscape, so with every turn the display adjusts to fit. Because it uses a display technology called IPS it has a wide,  - 178° viewing angle. Hold it up to someone across the room, or share it with someone sitting next to you, and everyone gets a brilliant view. With iPad, you use your fingers to do everything. And thanks Multi-Touch technology, everything you do- surfing the web, typing email, reading books, swiping through photos, and switching between apps-is easier and a lot more fun.  When your fingers touch the display, it senses them using electrical fields. Then it instantly transforms your taps, swipes, pinches an flicks into life life actions. Just like that.  Every iPad is built with advanced wireless technology. It automatically finds Wi-Fi networks, which you can join with a few taps. iPad is also available  with 3G connectivity or Wireless networks. So if you're somewhere without Wi-Fi, such as outdoors on a camping trip or on the road, you can still surf the web, check email, or get directions.