Including: barcode scanner, digital camera, keyboard, microphone, optical mouse, QR code scanner, touch screen (resistive, capacitive and infra-red), two-dimensional (2D) and three-dimensional (3D) scanners. Including: actuator, digital light processing (DLP) projector, inkjet printer, laser printer, light emitting diode (LED) screen, liquid crystal display (LCD) projector, liquid crystal display (LCD) screen, speaker, 3D printer. Limited to: acoustic, accelerometer, flow, gas, humidity, infra-red, level, light, magnetic field, moisture, pH, pressure, proximity, temperature.

Describe the purpose and characteristics of an embedded system and identify devices in which they are commonly used