A computer can serve no useful purpose unless it communicates with the external environment.

-M. Morris Mano

Computer IO involves the exchange of data between a computer and its environment. This can involve various forms of data, such as text, images, audio, or video, and can involve a variety of devices, such as keyboards, mice, monitors, speakers, printers, and more. The ability to perform input/output operations is a fundamental feature of modern computers and is essential for their use in a wide range of applications, from simple data processing to complex multimedia applications and real-time control systems. 

-ChatGPT (4/23)