Chapter
13
What Is a Computer? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
What Other Batteries Does the Computer Have? . . . . . . . . . . . . . . 228
How Does a Disk Store Information? . . . . . . . . . . . . . . . . . . . . . . . 228
How Big Is a Megabyte, Anyway? . . . . . . . . . . . . . . . . . . . . . . . . . . 229
How Does the Screen Display Information? . . . . . . . . . . . . . . . . . . 230
What Is Plug and Play? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
What Really Happens When You Turn the Computer On? . . . . . 233