Black Box 5250 manual Remote Emulator Card, DOS EMM386: A type of memory-managementsoftware

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.

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