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How Computers Work, Ninth Edition by Timothy Edward Downs, Ron White

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Part 1. Boot-Up Process

Boot-Up Process
Boot-Up Process
Boot-Up Process
 

“I think there is a world market for maybe five computers.”

 
 --Thomas Watson, chairman of IBM, 1943

BEFORE your personal computer is turned on, it is a dead collection of sheet metal, plastic, metallic tracings, and tiny flakes of silicon. When you push the On switch, one little burst of electricity—only about 3–5 volts—starts a string of events that magically brings to life what would otherwise remain an oversized paperweight. ...

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