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Mobile phones or cell phones are wireless portable, short range electronic devices used for mobile voice data communication. The communication is carried over a cell sites. Mobile phones support services like messaging, e-mail, gaming, Bluetooth, infra-red to name only a few.

Way back in 1915, the American company AT&T contemplated the use of wireless phones. This idea was soon shelved as the company feared that its control on wired service would end. Cell phones in 1996 ushered in a new age of mobile telephony. Mobile sets could now be connected to the internet and wireless e-mail. A new generation of Smart phones was born. The mobile phones are designed with latest technology which has turned as pocket PC.

Mobile phones can transmit and receive from a number of cell sites or base stations which are fitted with the help of special antennas. These sites are normally built on a tower. Mobiles transmit voice and data to the nearest cell site with the help of a low powered transceiver. The mobile number will be registered with the mobile telephone exchange.

The sites have low powered transmitters (1 or 2 watts) and can relay between the mobile phones and the main switch. The switch helps to connect the call to another caller of the same wireless service provider or to the public telephone network. This dialogue that ensues is a flow of data which is digital and digitized audio.  Read more...

With every upgrade of the computer processor, the techno-savvies experience faster processing and better performance. After the dual core computer, the quad core computer is a revolution in the arena of PC processors. Considered as a part of multi-core processor family, the quad core computers have displayed a significant increase in computer performance and there is no doubt that it is much faster than its previous generation processor. The faster performance of the new age processor is due to the algorithms used in the programs and it depends on the type of programs that run.

Wonderful performance:

When parallel programming and multi-tasking ability is concerned, performance of quad core computer is simply excellent. Ranging from high-end video game playing provision, Hardware virtualization, audio transcoding, and data folding, to video and photo editing, voice recognition facility, 3D rendering, and data folding, you can get faster performance in quad-core computers. With the multi threading processing it is possible to run maximum amount of virtual machines, the number depends on the memory space available on the computer though. You can work with virtual studio on XP or XP virtual machine. The specialty of quad-core computer is its multi-tasking performance.

The misconception:

Many people believe that the speed of the quad core computer is four times than that of the single processor computer. The concept is not totally wrong, because the processor can speed up the processing of only those programs that are specifically designed to run on quad-core computer. In those programs, the codes are written in way that allows to processor to perform four different tasks simultaneously. The multi-threading processor of quad-core computer  Read more...