INPUT / OUTPUT

Barcode Scanners

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Description: Commonly used in retail and inventory management to read barcodes. Feature: Uses laser or imaging technology to capture barcode information quickly and accurately.

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• OCR – Scans text/numbers (Optical Character Recognition)
• OMR – Scans mark (MCQ Exam Papers etc.) (Optical Mark Recognition)

QR Code Scanners

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Description: Utilized for reading QR codes in various applications like marketing and product information. Feature: Typically uses a camera or imaging device to scan and decode QR codes.

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Biometric Scanner

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Includes: Iris, Fingerprint, Face and Voice

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Printers

3 STANDARDS:

• Inkjet – Motor moves printer head across a page. Cartridges of spay in on the paper through the nozzle. Quick. Expensive per copy. High quality
• Dot Matrix – Punches holes through paper. Very Loud. Very Slow. Cheapest cost per copy. Can carbon print.
• Laser – Drum emits an electrical charge. (Like physics photocopier). Fastest. Most Expensive. Medium cost per copy. Highest quality.