PARALLEL AND USB PORTS
A type of port that transmits many bits at a time is called parallel port.It is much faster than a serial port.It is usually used to connect devices that require fast data transmission like printer and scanner.Parallel ports are often referred to as Line Printer (LPT )Port.The largest port on the back of the computer consists of 25 pins
USB PORT
It stands for Universal Serial Bus .It is a plug and play hardware interface.It is used to connect devices such as keyboard ,mouse ,joystick ,scanner and printer .It has a maximum bandwidth of 12 Mbps.It can connect 127 devices .The new device can be added without adding and adapter card.It is typically located on the back of the computer.Some computers provide USB port on the front side of system unit.
A type of port that transmits many bits at a time is called parallel port.It is much faster than a serial port.It is usually used to connect devices that require fast data transmission like printer and scanner.Parallel ports are often referred to as Line Printer (LPT )Port.The largest port on the back of the computer consists of 25 pins
USB PORT
It stands for Universal Serial Bus .It is a plug and play hardware interface.It is used to connect devices such as keyboard ,mouse ,joystick ,scanner and printer .It has a maximum bandwidth of 12 Mbps.It can connect 127 devices .The new device can be added without adding and adapter card.It is typically located on the back of the computer.Some computers provide USB port on the front side of system unit.
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