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firewall a security system designed to keep unauthorized individuals from gaining
access to a private network. A firewall may be deployed in either software or
hardware or both concurrently. One of the functions of a firewall is to effectively
screen all incoming and outgoing messages.
firmware a combination of software and hardware that is stored in a fixed form
such as read-only memory (ROM). Firmware can be found in many common
appliances such as fax machines and telephones. see embedded chip.
fixed-pitch type a font in which each letter has the same width and requires the
same amount of space.
flame a particularly intense insult or derogatory comment made via email, in a
chat room, bulletin or message board or another online public forum.
flame war any type of online discussion that turns to a vigorous exchange (often
from many sources) of insults and angry remarks. Some of the more popular
stock message boards have been known to play host to heated flame wars.
floating toolbar a set of tools appearing on a computer desktop that can be
dragged with the mouse cursor to another desktop location at the user’s
convenience.
Figure F.01. floating tool bar
floppy disk
floppy disk a portable magnetic storage disk, the term is somewhat of a misnomer.
The 5 1/4 inch storage disk used in early model PCs was flexible, thus called a
floppy disk. Today, the most common portable disk still called a floppy is the 3
1/2 inch variety. Unlike the earlier 5 1/4 inch version, the 3 1/2 inch floppy is
rigid, but the name floppy has managed to stick. Floppy disks usually store 1.44
MB of data. see Figure F.02.