chapter  22
12 Pages

Keyboard, mouse and monitors

The layout of the three rows of main writing keys (as distinct from function keys) follows the standard typewriter QWERTY layout, named from the fi rst six keys on the top line. This layout was originally devised more than 100 years ago to prevent fast typing, which jammed the keys of early typewriters, but it has become a standard and although alternatives (such as Dvorak and Maltron) are available for computers they are seldom seen. For laptop and other miniature PCs, the keyboard also contain a pointing device (see later for details of the mouse) which allows a pointer (usually an arrow shape) to be moved around screen by moving your fi ngers on a square sensing pad on the keyboard.