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

설명

The barcode scanner uses light to read barcodes.

댓글 (0)

광고

자바스크립트가 이 페이지를 올바르게 로드하도록 허용