What,USB,USB,stands,for,Univer computer What is USB?
----------------------------------------------------------Permission is granted for the below article to forward,reprint, distribute, use for ezine, newsletter, website,offer as free bonus or part of a product for sale as longas no changes a Gone are those times when the companies and the organisations didn't need a hi-tech system to handle them. Owing to the considerable increase in the business sector and thus, an enormous increase in the complexity of the organisational struc
USB stands for Universal SerialBus. USB is a standard developed in the 90s for the manufacturers of connectors,cables which are devised for the data exchange in computer and other electronicdevices like Digital video camera. This standard become too popular in thecomputer world and is mostly followed in connection with all peripheral deviceslike mouse, keyboards, printers, digital video camera, external drives etc. Internal structure of USB: USBcable consists of four shielded wires in which two of them are dedicated forpower supply, one for +5V and the other for ground. And a twisted pair of cablewhich used for data transmission.Chronological development of USB:USB 1.0 was launched in January1996 which delivers data transmission speed 1.5 M bits/sec Low speed and 12 Mbits/sec High speed. Latency for transmission of 1 bit in both High speed andLow speed mode is 1 msec. Twisted pairof cables is used to reduce noise and crosstalk. According to this standardmaximum length of cable for transmission at 12 M bits/ sec is 5 m. Pollingmethod is used to notify the CPU when the USB device is ready for datatransmission. USB 2.0 was launched in April2000 which promises to deliver data transmission speed of 480 M bits/sec but onthe ground it delivers speed of 35 M bits/sec to 280 M bits/sec. The USBsupports 127 devices connected directly or through the USB hubs. USB devicessupports hot plugging means when you plug or unplug them it is automaticallydetected by the computer. The Latency in USB 2.0 compatible devices for transmissionof 1 bit is 125 microseconds. Twisted pair of cables is used to reduce noiseand crosstalk. Incase of USB 2.0 standard maximum 3 m long cable can be usedfor transmitting data at 480 M bits/sec. Polling is used to notify CPU when theUSB device is ready for data transmission. USB 3.0 is the latest versionrecently launched in the market and is expected to deliver the 4.8 G bits/sec, whichis 10 times greater as compared to the USB 2.0. It has eliminated the problemof excessive power consumption and latency. The bandwidth for data transmissionis increased and it support full duplex communication means one route fortransmitting data and another for receiving at the same time. It also provides moresecurity as compared to the previous version and data is transferred in blocksof one byte which is scrambled, then it is transmitted in 10 bit format. Thisversion is also compatible with the devices working on the older USB 2.0version. With this speed now you can write 64 GB data within 20 minutes. TheUSB 3.0 consists of twice many cables to support super speed data transmission.It is expected to deliver 3.2 to 4 G bits/sec. In case of USB 3.0 a specialsignal is used to indicate whether the device is ready or not for datatransmission.If you are planning to buy newperipherals for your computer setup then you should go for USB 3.0standard compatilble devices. You can also take advices for some of the wellrenowned companies like Impcsupport. They provide 24*7 online technical supportsfor all Windows OS compatible computer setup. They also provide reliable software solution for solving this purpose.By using the computer maintenance tools provided by them you can enhancethe performance and speed of the computer.
What,USB,USB,stands,for,Univer