With many ports in the back of the computer nowadays it can be difficult to know what each of them does. USB ports though have increased with the majority of computer systems having at least 2 if not more USB ports, but what is its use.
USB stands for Universal Serial Bus and is a standard connection for a variety of different computer devices. USB is a universal connection, which means that it has been designed to allow many peripherals to be connected using a single interface socket that can be used around the world.
The connection was also designed to improve plug and play capabilities by allowing a variety of devices to connect and disconnect without having to reboot the computer or turn off the device. This means that there is less messing about and less chance of errors. Since being launched back in 2001, USB 2.0 allows much higher speeds than its predecessor USB 1.1. The main idea behind the 2.0 version of the USB is to widen the range of external peripherals that can be used on a computer.
Devices such as digital cameras, printers, scanners, mp3 players and mobile phones can all be easily used through the speed and ease of the USB 2.0. Many of the latest flat screen televisions also have USB ports in for current and future devices to link up to. How fast is USB 2.0? We know that the USB 2.0 connection is much faster than USB 1.1, but fast is it? Well, USB 2.0 has a raw data rate at 480Mbps, which means that it is rated 40 times faster than its predecessor interface, USB 1.1, which tops at 12Mbps.
The original intention for the USB 2.0 was to go only as fast as 240Mbps, but then the Promoter Group decided to increase the speed up to 480Mbps. In terms of connection speed, FireWire remains the fastest, but many devices are still not compatible with computers. It is, on the other hand, brilliant for DV camcorders, digital audio and video devices, external hard drives, high-performance DVD burners and any other devices that demands continuous high performance throughput.
Overall, it is clear that the USB cable is still the connection of choice for the majority of electrical, computer based devices and it doesn't look like it's going to slow down any time soon. With most PC computers providing a whole host of ports to fit any device, it is always the USB that has the most due to its popularity
Source : www.goarticles.com
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