password

a code used to gain access to a locked system. Good passwords contain letters and non-letters and are not simple combinations such as virtue7. A good password might be:  Hot$1-6     See also: Login

PC

see Personal Computer. For IBM PC or compatible, plural: PCs

percent

one word; spell out; use "%" only in charts

personal computer

a term used to indicate an IBM compatible computer, as opposed to a Macintosh or other computer.  Abbreviated PC.

pixel

one of the tiny dots that make up a screen image; from "picture element"

p.m.

afternoon; e.g., 1:30p.m., no space

posting

a single message entered into a network communications system. E.g. A single message posted to a newsgroup or message board. See also: Newsgroup

ppm

pages per minute

pre

prefix   Generally not hyphenated .

press

preferable to "hit" or "strike" in reference to a key

preventive

not "preventative"

pull-down

verb, adj.; menus on the Macintosh; see "drop-down"