What is meant by the term 'ports'? Explain the different types of ports.

Ports are the connecting nodes to interface the peripheral devices with the processor. They act as a bridge between the external devices and the CPU for data communication.

The different types of ports are as follows:

1. Serial port: It is used to supply data serially i.e., bit by bit. It uses a single wire for communication. This port takes much time to transfer data i.e., it transfers a byte in eight tries. Serial ports are usually available with 9 pins or 24 pins and allow connections of mouse, modem etc.

2. Parallel port: This type of port is available with a 24 pins female connector and is capable of transmitting eight bit signals at a time i.e., the bits travel parallel to each other. The transfer rate is eight times faster than a serial port. This port is basically to connect CD-writers, scanners, printers, hard disks etc.

3. USB port: This port is usually designed to connect printers, plotters, mouse, joystick, pen drives, digital cameras etc. with a single plug arrangement. It avoids pin configuration of the ports.