History of Computers - USB 3.0

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Introduction

USB 3.0 is designed to improve the speed and efficiency of existing USB technology, further standardizing computer ports and dominating the computer market [1].

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Overview

USB technology enables users to easily transmit data between two devices, providing a uniform connection for many different devices and improving data storage overall. USB 3.0 improves the speed and energy usage of existing USB technology while remaining backwards compatible, boosting all devices dependent on USBs. USB 3.0 was invented by a consortium of technology companies called the USB 3.0 Promoter Group (Hewlett-Packard, Intel, Microsoft, NEC, ST-Ericsson, and Texas Instruments) in November 2008. USB 3.0 can be visually differentiated from older USBs by a blue connection strip rather than a grey connective strip.

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How It Works

USB 3.0 has many advantages over the previous USB technology: USB 3.0 consumes less power by powering down unused data streams. USB 3.0 also has data transfer speeds of up to 5 Gbit/s as opposed to USB 2.0’s 500 Mbit/s speeds (~10x the previous speed) [2]. USB 3.0 does this by sending all data in an eight bit format, then scrambling it with a specific algorithm. The receiver converts the data to a ten bit format, and then unscrambles it. This process reduces electromagnetic interference and increases speed [3]. Finally, USB 3.0 can communicate both ways simultaneously between two devices, increasing data transfer speeds even more. USB 3.0 is also backwards compatible, allowing a smooth transition from old technology to new technology [4].

Significance

USB 3.0 transfers data faster, consumes less power, and provides simultaneous two way data transfer. USB 3.0 improves all devices that depend on USBs, such as flash drives, keyboards, chargers, and many other forms of periphery, making USB technology more dominant in the computer market. USB 3.0 not only improves data storage, data transfer, and energy efficiency physically but also represents the constant improvement of computer technology over time (Moore’s Law).

References

  1. ↑ http://computer.howstuffworks.com/usb.htm
  2. ↑ http://www.techspot.com/guides/235-everything-about-usb-30/
  3. ↑ http://en.wikipedia.org/wiki/USB_3.
  4. ↑ http://www.usb.org/developers/ssusb

External Links

[1] [2]

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