Correct option is A
A
touchpad is an input device that detects finger movement and converts it into corresponding cursor movement on the screen. It is commonly used in laptops for navigation and input.
Important Key Points:
1.
Touchpad: Acts as a pointing device, similar to a mouse, allowing the user to interact with the system.
2. Input devices provide data to the computer for processing, including keyboards, mice, touchpads, and scanners.
3. The other options (projector, monitor, and 3D printer) are output devices, not input devices.
Knowledge Booster:
1.
Projector: Displays visuals by projecting them onto a screen, an output device.
2.
Monitor: Displays data and graphics, also an output device.
3.
3D Printer: Produces three-dimensional physical objects from digital models, classified as an output device.
