Multiple choice general knowledge science & technology

A Cathode Ray Tube is found in what?

  1. CPU

  2. Printer

  3. Scanner

  4. Monitor

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

CRT (Cathode Ray Tube) is the display technology used in traditional monitors and TVs before LCD/LED. CPU processes data, printers print, scanners digitize - none use CRT technology which is specifically for display devices.