The Silicon Jungle by David H. Rothman

5. What kind of graphics—=bit mapped= or =character based=? The bit

mapping means sharper images. Your computer keeps track of each little dot, each pixel, on the screen. That hogs memory and may rule out color. =Character-based= systems, though, don’t let you make your lines and curves as smooth as bit mapping does. They must work with already-shaped letters, numbers, and other visual forms.