Computer Science for IGCSE & O level - Hardware (Section 16 - No. 47) | ExamPlay

Computer Science for IGCSE & O level - Hardware (Section 16 - No. 47)

What technology does the barcode scanner typically use?

Radio waves

Light reflection

Magnetic fields

Infrared sensors

Spiegazione

The barcode scanner uses light to read barcodes.

Commenti (0)

Annuncio