Page Summary: This overview connects Cambridge O Level Computer Science Topic 3 Input Devices Barcode with supporting references and nearby topics so readers can understand the subject without jumping between unrelated pages.
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![IGCSE Computer Science - Hardware: Input Devices [Barcode scanner, Qr, Keyboard, Camera, Mic] - C3](https://i.ytimg.com/vi/8bUWgBEAgA8/mqdefault.jpg)
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