And they make a constant shrieking sound.
Only SD CRTs make an audible shrieking sound. LCD computer monitors were replacing VGA or better CRTs with a horizontal refresh rate of >30kHZ. Maybe they could annoy your dog but no human could hear it.
alt Hacker News
Only SD CRTs make an audible shrieking sound. LCD computer monitors were replacing VGA or better CRTs with a horizontal refresh rate of >30kHZ. Maybe they could annoy your dog but no human could hear it.