Input/Output, often abbreviated as I/O, refers to the processes of receiving and sending data between a computer and the outside world. The input is the information or commands provided to a computer, typically through devices like a keyboard or mouse. The output is the result produced by the computer, which can be displayed on a screen, printed on paper, or sent to another device. In computing, I/O operations are essential for user interaction and data processing. They allow users to enter data and receive feedback, enabling tasks such as file management, data analysis, and software applications. Efficient I/O operations are crucial for overall system performance.