A yellow, gold or amber blinking light on a computer varies in meaning between systems, but in general, these lights are designed to give clues as to the power and activity states of the computer. Not ...

The right lighting can make a world of difference, especially if you spend long hours in front of a computer. But there's more to choosing the best lights for your home office than you might think.

Computers that use light instead of circuits to run calculations may sound like a plot point from a Star Trek episode, but researchers have been working on this novel approach to computing for years.