Computer Science : S3 : L10 : Input Device

Barcode Scanner

A device that uses a laser to scan the black and white area of a barcode, with the amount of light reflected back determining the binary code assigned.

Digital Camera

A camera that converts light intensity into digital data representing color values, typically used for photography.

Keyboard

A device used to enter characters and functions into a computer system by pressing buttons or keys.

Optical Mouse

A mouse that uses light to detect movement instead of a ball, commonly used for clicking and selecting.

Resistive Touch Screen

A touch screen that senses direct pressure from the user and is activated by other equipment, commonly used in ATMs and devices with various resolutions.

Capacitive Touch Screen

A touch screen that requires a conductive material like a finger to send an electrical charge to the device, commonly used in tablets and iPads.

Moving Coil Microphone

A microphone that converts sound waves into electrical signals by vibrating a diaphragm attached to a coil, commonly used on stages and for recording.

QR Reader

A device or app that captures and reads QR codes, which can store various information and are commonly used for quick response actions like payments.

2D Scanners

Scanners that measure levels of reflected light to create digital versions of documents and photographs, commonly used at airports for reading passports.

3D Scanners

Scanners that use lasers to record the geometry and dimensions of an object, commonly used for creating 3D models in fields like dentistry and product development.