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💡 3.2.2 Understand what is meant by an output device and why it is required.
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
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Summary of all OUTPUT devices
| Output device | Description of data output | Example of use |
|---|---|---|
| Actuator | It is a component that outputs an action, often a type of movement, | |
| that causes another device to | ||
| operate. | Used in automated system to move or turn on/off another device | |
| Digital light processing (DLP) projector | Uses light reflected from millions of little mirrors to output an image | Used in classrooms to project an image onto an interactive whiteboard. |
| Inkjet printer | A device that squirts liquid ink from nozzles to output a document/image | For personal use to print photographs (for e.g.) |
| Laser printer | A device that uses a rotating drum and powdered toner to output a document | Used in large scale printing. E.g. office to print letters |
| Light emitting diode (LED) screen | A screen that uses LEDs as a blacklight to output an image. | Built into a mobile phone |
| Liquid crystal display (LCD) projector | A screen that shines light through crystals to output an image. | To project an image in a home cinema system |
| Liquid crystal display (LCD) | A screen that shines light through crystals to output an image. | Built into a television screen |
| Speaker | Outputs sound | Built into a mobile phone so one user can hear another's user voice. |
| 3D printer | Device that builds layers of materials to output a 3D objective | Used in medicine to create a prosthetic limb. |
Printers
LCD screens and LEDs
2D and 3D cutter