Computer Science for IGCSE & O level - Hardware (Section 2 - No. 5)
In a barcode, the width of the lines can represent different things. Which of the following is it associated with?
Digits.
The time of the day.
The cost of the product.
The weight of the item.
Vysvětlení
The varying thicknesses of dark and light parallel lines in the barcode represent digits.