Ports || How Many Types Of Ports Are Used In Computer ?

   


   

  A port is a socket for external devices to connect to the system unit. Some pots connect directly to the system board while other connect to cards that are inserted into slots on the system board. Some ports are standard features of most computer systems and others are more specialized.


STANDARD PORTS -

Many ports, like the mouse, keyboard, and video ports, are for specific devices. Others, like those listed below, can be used for a variety of different devices.

• Serial ports are used for a wide variety of purposes. They are often used to connect a mouse, keyboard, modem, and many other devices to the system unit. Serial ports send data one bit at a time and are very good for sending information over a long distance.

• Parallel ports are used to connect external devices that need to send or receive a lot of data over a short distance. These ports typically send eight bits of data

• simultaneously across eight parallel wires. Parallel ports are mostly used to connect printers to the system unit.

• Universal serial bus (USB) ports have virtually replaced serial and parallel ports. They are faster, and one USB port can be used to connect several devices to the system unit.

• FireWire ports have comparable speed to USB 2.0 ports and provide connections to specialized FireWire devices such as camcorders and storage devices.

• Ethernet ports are a high-speed networking port that has become a standard for many of today's computers. Ethernet allows you to connect multiple computers for sharing files, or to a DSL or cable modem for high-speed Internet access.


SPECIALIZED PORTS -

In addition to standard ports, there are numerous specialty ports including S/PDIF, HDMI, MIDI, and IrDA ports.

• Sony/Philips Digital Interconnect Format (S/PDIF) parts are also known as optical audio connections. These ports are used to integrate computers into high-end audio and home theatre systems.

• High Definition Multimedia Interface (HDMI) ports provide high-definition video and audio, making it possible to use a computer as a video jukebox or an HD video recorder.

• Musical instrument digital interface (MIDI) ports are a special type of serial port for connecting musical instruments like an electronic keyboard to a sound card. The sound card converts the music into a series of digital instructions.

• These instructions can be processed immediately to reproduce the music or saved to a file for later processing.

• Infrared Data Association (IrDA) ports provide a wireless mechanism for transferring data between devices. Instead of cables, the IrDA ports from each device are directly aligned and infrared light waves are used to transmit data. One of the most common applications is to transfer data from either a hand held or notebook computer to a desktop computer. 


CABLES -

Cables are used to connect exterior devices to the system unit via the ports. One end of the cable is attached to the device and the other end has a connector that is attached to a matching connector on the port.

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