Computer Basics: Input and Output Devices
To interact with a computer, we use hardware peripherals categorized based on how data flows: either into the system (Input) or out of the system (Output).
📥 Input Devices
An input device is a piece of hardware used to provide data and control signals to a computer. It allows the user to communicate with the machine.
| Device | Function |
|---|---|
| Keyboard | Entering text and commands. |
| Mouse | Pointing and selecting items on the screen. |
| Microphone | Capturing audio/voice data. |
| Scanner | Converting physical documents into digital format. |
| Webcam | Capturing real-time video/images. |
| Touchscreen | Direct interaction with the display (both input and output). |
📤 Output Devices
An output device is hardware that converts processed data into a human-readable form, such as text, graphics, audio, or video.
| Device | Function |
|---|---|
| Monitor | Visual display of text and graphics. |
| Printer | Producing physical copies of digital documents. |
| Speakers | Producing audible sound. |
| Projector | Displaying images/videos on a large screen. |
| Plotter | High-quality printing for large graphics/designs. |
| Headphones | Private audio listening. |
💡 Tip
Hybrid Devices: Some devices function as both input and output. A common example is aTouchscreenor aMultifunction Printer(which can scan and print).