Computer monitors often include one or more LED indicator lights that show these devices' operating status. Monitor manufacturers can build a set of signals -- made up of sequences of LED flashes and color changes -- into the firmware of these devices' circuit boards, providing the equivalent of a private Morse code to alert you to hardware, connection and electrical problems. When you know the codes for your monitor, you can decipher and respond to its blink alerts.
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Writer Bio
Elizabeth Mott has been a writer since 1983. Mott has extensive experience writing advertising copy for everything from kitchen appliances and financial services to education and tourism. She holds a Bachelor of Arts and Master of Arts in English from Indiana State University.