An input device is a hardware component that connects to a computer and allows users to send data and commands. Examples of input devices include keyboards, mice, scanners, and microphones. These devices capture information and transmit it to the computer for processing.

On the other hand, an output device is also a hardware component connected to a computer. Still, its primary function is to receive and display or reproduce data generated by the computer. Common examples of output devices include monitors, printers, and speakers. After the computer processes the input data, it sends the results to the output device, allowing users to see, hear, or print the information in a useful format. Together, input and output devices facilitate the interactive experience between users and computers, enabling effective data communication.