3. USB (universal serial bus)
To interface device.
Plug and play capability.
It is a small potable device.
Store a information.
Transform information easily one computer to
another.
Size and shape can hold gigabytes.
4. Serial bus interface.
High speed communication.
Real time data transfer.
Replaced parallel port in many application.
High definition Audio video network.
5. Used for connecting some keyboard.
Keyboard and mouse interface are electrically.
To allow bidirectional communication.
Connect to keyboard port.
Computer depending on configuration.
