Screen Savers

If you are reading this then you are probably using a computer of some kind: a Mac, PC or Smartphone. You might have taken the liberty of customizing your lock screen or working screen background. You may have adjusted what happens when your computer is idle by turning on a screen saver of some ilk (it’s here we drop the smartphone which usually turn off). Screen savers originated as a result of a problem of image burn-in on the old CRT (cathode ray tube) monitors where if you left an image on long enough, it literally becomes burned into the display and nothing will remove the ghost image.

image: pixabay.com

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