Computers have been here for a really long time. Or so it seems. But in real they were only developed over the last few decades.
The first computers were massive and were as big as the rooms they were installed in. Needless to say they were pretty expensive too. The companies which had them installed had to spend a lot in their cooling systems and in have false floors which hide the extensive amounts of coils of cable they used.
The power in early computers was controlled by electron tubes also called valves. These were made of glass which became too hot when in use. They 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 a unique thing known as a chip was developed to replace the transistors. These were tiny electrical circuits which were built on a wafer of silicon. Things progressed and more modifications took place 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.
The latest of the PCs is the iPad, a tablet personal computer by manufactured by the Apple 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 about 700 grams.
The iPad is finger sensitive you don't have to use a stylus. The iPad is mobile so it uses the WiFi or a 3G mobile data connection to browse the internet. In the first three months of its launch it was able to sell 3million devices worldwide.
The first computers were massive and were as big as the rooms they were installed in. Needless to say they were pretty expensive too. The companies which had them installed had to spend a lot in their cooling systems and in have false floors which hide the extensive amounts of coils of cable they used.
The power in early computers was controlled by electron tubes also called valves. These were made of glass which became too hot when in use. They 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 a unique thing known as a chip was developed to replace the transistors. These were tiny electrical circuits which were built on a wafer of silicon. Things progressed and more modifications took place 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.
The latest of the PCs is the iPad, a tablet personal computer by manufactured by the Apple 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 about 700 grams.
The iPad is finger sensitive you don't have to use a stylus. The iPad is mobile so it uses the WiFi or a 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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