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This lesson covers the main output devices required by the OCR H446 specification: monitors, printers, speakers and actuators. For each device you must understand how it works, its advantages and disadvantages, and when each type is appropriate.
An output device is any hardware that converts processed digital data from a computer into a form that humans can perceive (visual, audible, physical) or that affects the physical world.
A monitor (or display) is the primary visual output device. There are several technologies:
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