What is the function of a port in computing?

The function of a port in computing is to serve as a socket for attaching external devices. Ports allow communication between the computer and various peripherals or external elements, such as keyboards, mice, printers, and external storage devices. This interface facilitates the transfer of data and power, enabling the connected devices to interact with the computer system.

Different types of ports carry specific functionalities. For instance, USB ports are commonly used for a wide range of devices due to their versatility, while HDMI ports are dedicated to video and audio output. The existence of these physical connections demonstrates how ports are integral to expanding a computer's capabilities by connecting it to the external world.

In contrast, while secure interfaces for data transfer and safety features in hardware are crucial aspects of computer operation, they do not specifically define what a port is. Similarly, a type of software program does not accurately represent the role of ports, which are physical or virtual channels rather than applications.