Computer Science · Oct / Nov 2021 · Paper 12 · Question 7
2210
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Five statements are given about devices. Tick (✓) to show if each statement applies to a 3D scanner, barcode reader or a Quick Response (QR) code reader. Some statements may apply to more than one type of device. Statement 3D scanner (✓) Barcode reader (✓) QR code reader (✓) uses position and alignment markers for orientation when scanning scans the shape and appearance of an object uses reflected light from a laser to convert a black-and-white pattern into binary can often be built into an Electronic Point Of Sale (EPOS) terminal, for example, a supermarket checkout it is an example of an input device [5]
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