LCD monitors contain millions of pixels, each one composed of three subpixels: red, blue, and green. When all three are on, a pixel looks white. Other combinations create other colors. A pixel can ...

There may come a time when you feel the need to test whether the LCD display on your computer monitor is working fine. You may believe that the little dot is a dead pixel, so how do you make sure?

If you weren't around (or paying attention) during the early days of flat panel display, you might not be aware of the scourge that dead or stuck pixels represented. These pixels either didn't light ...