Input and Output Devices

Devices that feed data into the computer and devices that deliver processed results back to the user.

📖 ~4 min read 💻 RRB NTPC / Group D — Computer Awareness

Device	Function
Keyboard	Text and command entry
Mouse	Pointing and clicking
Scanner	Converts physical documents/images into digital form
Joystick	Used mainly for gaming and simulation control
Microphone	Captures audio input
Light Pen	Draws or selects on-screen using light-sensitive tip

Device	Function
Monitor	Visual display of output
Printer	Produces hard copy (paper) output
Speaker	Audio output
Projector	Displays output on a large surface/screen

💡 Some devices act as BOTH input and output — a touchscreen (input via touch, output via display) and a modem are common examples.

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