Computer Hardware User Manual

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5250 REMOTE EMULATOR CARD
DCD (Data Carrier Detect): The local modem is receiving data from the remote
modem.
default: The value assumed when no other value is specified.
default setting: The standard setting for a feature which automatically appears
unless the user selects a different setting.
delimiter: A character that marks the beginning and/or end of a unit of data.
DIP switch: Used to provide user-accessible configuration settings.
direct access: A hotkey sequence used to take the user directly to the next host
session configured.
display screen: A cathode-ray tube that is used to display alphanumeric characters.
display station: An input/output device containing a display screen and an
attached keyboard. Also called a terminal.
DOS (Disk Operating System): A single-user operating system developed by
Microsoft. DOS can be referred to as PC-DOS for the PC, PS/1, and PS/2 series, or
referred to as MS-DOS for non-IBM PCs.
DOS EMM386: A type of memory-management software.
dot-matrix: A text printer that prints a series of dots to create characters.
driver: A program routine that contains instructions necessary to control the
operation of a peripheral.
DRS (Data Set Ready): This indicates that the modem is connected to the
telephone circuit.
DTE (Data Terminal Equipment): A “communication destination” device such as a
PC or terminal, as opposed to a “communication relay” device such as a modem.
duplex: Prints on both sides of the paper.
EBCDIC (Extended Binary Coded Decimal Interchange Code): The character set
used by IBM mainframes, as opposed to ASCII, the set used by most personal
computer systems.
emulation: The duplication or imitation of one device by another device.