Enter: The IPad
When we think of computers we can only surmise that they have been here for a really long time. It only seems though. But in reality they were developed over the last century.
The first computers were massive and occupied the whole room with their gigantic sizes. They were pretty expensive too. The companies which had them installed had to spend a lot in air-conditioning to keep the giant machines cool and have false floors to hide the coils of cable they used.
Early computers had electron tubes which were also known as valves. These were made of glass which became too hot when in use. These needed tremendous amount of power.
During the 1950s things progressed and transistors were developed. They replaced the expensive valves as they were very cheap. Their small size led to the computers being concise too.
In the 1960s chip was developed to replace the transistors. These are tiny electrical circuits built on a bar of silicon. They were further modified to form the microprocessor chips which were equivalent to thousands of transistors.
Interestingly the development of the computers is linked with the US Soviet race into the outer space. But today the basic home personal computers are a lot more powerful than those used by the first of the astronauts. They are even more powerful than the enormous machines installed in corporations less than 40 yrs ago.
Ever since then there has been a competition to introduce the fastest and then smallest in this sector. A tablet computer by the name of iPad by Apple has been introduced in the market. It is a platform where e-books, periodicals, games, multimedia, music, movies, and all the web applications converge together to give a complete feel to the user. It weights only 700 grams.
The iPad uses multi-touch finger sensitive technology without a pressure-triggered stylus. The iPad is mobile so it uses the 3G mobile data connection to browse the internet. In the first three months of its launch it was able to sell 3million devices worldwide
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