History When: In 1995-96 Compaq, Digital Equipment Corporation (DEC), IBM, Intel, Microsoft and NEC, joined later by Hewlett-Packard, Lucent and, Philips got together and designed the USB
History Why? The USB was created out of a need for universal communication between devices. The problem with that was that computer designers were literally running out of room Before the USB every new computer device needed a different serial port.
Advantages USB Flash Drive Cost effective Power efficient Universal design One fits all Resistant to scratches and Dust Convenience Size
Disadvantages Size Being to small leaves some devices to be easily misplaced It breaks its gone Compared to some CD’s that can be repaired once scratched to retrieve data USB’s once they fail they fail.
How it Works. Enumeration the computer would decided which kind of data the device uses Interrupt - low data transfer - keyboard or mouse Bulk - large amounts of data - printer or external hard drive Isochronous - streamed data - microphones or speakers
Encoding the process of recoding or modifying information into a desired format or pattern is when the two devices communicate and configure to which form of data transmission should be used
Transmission Convey information from the device to another location. Can be as simple as typing a few keys on the keyboard or transferring large amounts of data like pictures, music and the like
Receiving Recognizes and accepts information from transition and collects the inputs and readies them for storage This would be where the typed keys would be displayed onto the screen or stored in a word document.
Versatility USB can be incorporated into just about anything. Toys Camera’s Phones Speakers
Evolution USB 1.0 – 1.1 Maximum transfer rate of 12 mbps First appeared on market in 1995 and 1998
Evolution Hi-Speed USB or USB 2.0 released with speeds of 480 mbps. Released in 2000
Evolution Super-Speed USB or USB 3.0 predicted speeds of 5 gbps Soon to be released.
Future Wireless USB connections you will have the same personal security of wired USB 2.0
Sources USB Today. Intel, retrieved March 11, 2010, from http://www.intel.com/technology/usb/ About Us, USB-IF, retrieved March 11, 2010, from http://www.usb.org/about USB Flash Drive. Wikipedia, retrieved 17, 2010 http://en.wikipedia.org/wiki/USB_flash_drive Usblyzer. http://www.usblyzer.com/brief-usb-overview-and-history.htm Super Speed. Ars technical, retrieved March 11, 2010, http://arstechnica.com/hardware/guides/2009/08/super-speed-a-brief-history-of-usb-30.ars The USB Process. How Stuff Works, retrieved April 2, 2010, http://computer.howstuffworks.com/usb3.htm USB Games. Shocking Fun, retrieved March 10, 2010 http://www.shockingfun.com/category_s/210.htm Akaipro. Retrieved March 10, 2010 http://www.akaipro.com/ewiusb