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Removed circuit tag per Meta: http://meta.electronics.stackexchange.com/questions/5455/the-circuit-tag?cb=1
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Adam Haun
Adam Haun
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Post Closed as "Not suitable for this site" by Leon Heller, PeterJ, brhans, Daniel Grillo, Matt Young
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Jon Kapus
Jon Kapus
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How to make 20 LED's light up one at a time and remain on, and then power off one at a time?

I’m looking to see if there is a circuit I can build that would light up a row of about 20 LED’s one at a time after pressing a button, and keep those LED constantly on once there were activated. Finally, when pressing a button again, they all power off one at a time in the same order?