Input/output devices are essential components of a computer system that allow users to interact with the machine. Input devices, such as keyboards and mouses, enable users to enter data and commands into the computer. These devices convert user actions into signals that the computer can understand. Output devices, on the other hand, present information from the computer to the user. Common output devices include monitors and printers, which display visual information or produce physical copies of documents. Together, input and output devices facilitate communication between the user and the computer, making it easier to perform tasks and access information.