WBCS.LIVE practice question

The barcode scanner consists of a light source, a lens and a light sensor that ______________.

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. converts analog signal to digital signal
  2. converts digital signal to analog signal
  3. converts electronic wave to magnetic wave
  4. translates optical impulses into magnetic impulses

Correct answer and explanation

Correct answer: converts analog signal to digital signal