The use of input and output devices is critical in computing. Input devices are responsible for the entry of data into a computer system, whereas output devices are responsible for the display of results after processing data.
Examples of input devices include keyboards, scanners, mice, and microphones. Data is entered into the system through these devices, and the system processes the data, after which, the output is displayed through output devices such as printers, monitors, speakers, and projectors.
Input devices establish communication with a computer, whereas output devices enable the user to effectively interact with the system. Input devices are essentially an interface between the user and the computer, enabling the user to input data and interact with the system.
Output devices are equally important. Without them, there would be no way of knowing if a computer system is doing what it was designed to do. The output devices display processed data, and as such, users can observe the results of instructions executed by a computer program.
In summary, input and output devices complement each other in computing. Input devices enable data entry, while output devices display information and processed results. Without these devices, the computer would merely be a shell with no means of interacting with users. Input and output devices are therefore critical components of computer systems.
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