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configuration.
control keys:
A key or sequence of keys you enter from the keyboard to initiate
a particular function within a program.
controller: Built-in hardware and software that controls the functions of a
specific internal or peripheral device (e.g. keyboard controller).
conventional memory:
The first 640KB of RAM where MS-DOS runs programs and
temporarily stores data. Also called standard memory.
CPS:
Characters per second. Typically used to indicate the transmission speed
of a printer.
CPU:
Central processing unit. The portion of the computer that interprets and
executes instructions.
CRT: Cathode Ray Tube. A vacuum tube in which beams projected on a fluorescent
screen-producing luminous spots. An example is the television set.
CTS:
Clear to Send. An RS-232-C signal that indicates a change in the
transmission direction; used in the exchange of data between computer and serial
device.
cursor:
A small, blinking rectangle or line that indicates the current position
on the display screen.
D
data: Information that is factual, measurable or statistical that a computer
can process, store, or retrieve.
data bits:
A data communications parameter controlling the number of bits
(binary digits) used to make up a byte. If data bits = 7 the computer can
generate 128 unique characters. If data bits = 8 the computer can generate 256
unique characters.
DC: Direct Current. Electric current that flows in one direction. This type
of power is usually supplied by batteries.
DCE: Data Communication Equipment. DCE and DTE indicate whether the specific
equipment transmits on pin 3 and receives on pin 2 (DCE) or transmits on pin 2
and receives on pin 3 (DTE).
See
DTE.
default:
The parameter value automatically selected by the system when you or
the program do not provide instructions. Also called a preset value.
delete:
To remove data from a disk or other data storage device. Synonymous
with erase.
device driver: A program that controls communication between a specific
peripheral device and the computer. The CONFIG.SYS file contains device drivers
that MS-DOS loads when you turn the computer on.