Just a few years ago we were carrying around those big, heavy lumps of plastic. If you walked down any sidewalk in any city, all you would see was the antennae sticking up as people valiantly tried to talk as they walked. Thankfully, it wasn`t long before cell phones became smaller, neater and with a much improved signal. Then came sms messaging, picture messaging, then video calling and now we have a range of cell phones that act as a mobile office, these are smartphones.
These are exactly what their name suggests; they are very smart. You still have all your normal cell phone functions, but you also have full internet access, email, a QWERTY keypad, fax facility and the Microsoft office suite. These new generation phones are an essential item for today`s businessmen, but are becoming more and more popular with techno geeks who want to get their hands on the latest bit of kit.
The first ever smartphone was unveiled by IBM in 1992, and shown as a concept product at COMDEX, a trade how in Nevada. It was called `Simon` and released to the general public a year later by BellSouth. Its main features were a world clock, a calendar, an address book and notepad, email and the ability to send and received fax. It was also the first phone with a touch screen. Compared to today`s phones, Simon was a fairly low end product, but at the time its technology was outstanding.
Global positioning system (GPS) is an important tool for any wireless system. GPS provides the geographical locations no matter where you are. Initially it was developed by the federal government meant to be used in military bases to accurately determine the position of ballistic missile submarines, prior to the launch of those missiles.
But in addition to military and surveying exercise, today GPS is used in many commercial purposes. It is used for air, land and sea navigation. Also used in law enforcement purposes for vehicle tracking. GPS tracks any location with the help of interpreting signals received from 3 or more orbiting satellites. This tool can also be used to know the weather forecast details.
Today, communication devices especially cell phones have become much more technologically advanced and are not restricted to mere means of conversation. GPS tracking in cell phone is one of such advance features. Before GPS, triangulation technique was used where three cell phone towers were used to determine the approximate location of any particular cell phone. But often the finding wasn`t precise. However, with the advent of this technology, one can get the accurate location within about five meters. The cell phone enabled GPS gives ten times more accurate than triangulation.
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