All About Ports

A computers physical port is a special arrangement of pins or holes

, so that plugs and sockets can be connected to exchange data between them. There could be different types of physical ports, which can be named as serial port, parallel port plug and play port. Get some technical support to learn more about different types of ports.

Serial ports can send and receive one bit of data at a time. A pair of wires is used for it (Ground and +/-). But parallel ports can send multiple bits of data and to make this happen, several sets of wires are used. A port could be hot swap compatible, where a hot swappable device can be connected to it. The computer, without any need to restart, can recognize whether the device connected is a hot swappable or a plug and play. The device can also be connected while the computer is running. In case of USB ports and Firewire ports, the connected device is recognized at the moment it gets connected to a running computer and the handshaking with the connected device takes place. By handshaking, we mean the exchange of information related to transfer type, transfer rate, device information etc.

We also have another type of port, known as the virtual port. If we consider the set of rules or protocols like TCP/IP in a computer network then the logical end-point is the virtual port. The question is why logical? It is because there is no physical existence of these types of ports. Depending upon the software that has been used to create the protocols, we can create an interface where data exchange takes place. We also give it a number. The data exchange takes place between two computer systems, where different layers are involved before we can actually get the data in human readable form. For example, the HTTP or the hypertext transfer protocol uses port number 80. On the basis of it, websites open up in the internet.

by: James Madison

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