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word processing program in the foreground while periodically monitoring a
realtime stock quote application. To access the program in the background, the
user would click the program icon on the taskbar.
backlighting flat-panel display illumination from behind that causes the foreground
to appear more distinct in contrast to the background.
backslash the keyboard character, ( \ ).
backup also written as back up, to copy or save a program or file for safe keeping
in the event the working program fails in some way or is lost. It is wise to back
up all files on floppy, zip disks, or tape. Many software applications periodi -
cally prompt you to save your work while you are actually working. However, a
usershould still backup all work on the computer’s hard drive in case of malfunction
or failure.
bandwidth the quantity of data that can effectively be sent through a connection,
measured in bits-per-second. The greater the bandwidth, the faster the transmission
of information. High bandwidth also provides clearer images on a
computer’s display monitor while online.
bang the key character, ( ! ). The exclamation point.
banner ad an advertisement on a Web page with a short compelling message. The
message is designed to get the user to click on the ad. The ad contains a hyperlink
to the advertiser’s Website. see hyperlink.
bar chart (bar graph) a type of chart or graph that quantifies or measures relative
values represented by rectangular bars.
Figure B.01. bar chart
BASIC
BASIC (Beginners All-purpose Symbolic Instruction Code) an early computer programming
language developed in the 1960s that has many contemporary varia-