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Hexadecimal
A numbering system with a base of 16, frequently used by
programmers. Any decimal number between 0 and 255 can
be expressed by a two-digit hexadecimal number.
High-density
A type of format that allows you to store more data than on
single- or double-density diskettes. A 51/4-inch high-density
diskette can store 1.2MB of data. A 31/2-inch high-density
diskette can store 1.44MB of data.
input/output (i/O) port
see Port.
interface
A physical or software connection used to transmit data
between equipment or programs.
Jumper
A small device that connects two pins on an option card, a
disk drive, or the main system board to activate a particular
function.
Key disk
A diskette containing a copy-protected program that must
remain in the diskette drive while you are using the program.
Kilobyte (KB)
A unit used to measure storage space in a computer’s memory
or on a disk. One kilobyte equals 1024 bytes.
LIM 4.0 EMS
Version 4.0 of the Lotus/Intel/Microsoft Expanded Memory
Specification-a protocol that allows certain application
programs to use memory that MS-DOS cannot use.
Glossary 9