My eyelids need a firmware upgrade

One of your old file servers is connected to a CRT display, and the screen flickers noticeably when you’re viewing the screen. Which of these is the most likely cause of this flickering?

A) Faulty backlight

B) Resolution configuration

C) Refresh rate setting

D) Faulty electron gun

E) You need to get more sleep

The answer: C) Refresh rate setting

A CRT “paints” the screen one line at a time, and a slow refresh rate makes the screen appear to flicker and blink.

Want to know more? Watch “An Overview of Display Device Types.”

There are many ways to display the output from your computer. In this video, you’ll learn about CRTs, LCD technology, LED and OLED, plasma displays, and digital projector technology.