High-density
A type of format that allows you to store more data than
normal. A 5 ¼-inch high-density diskette can store 1.2 MB of
data. A 3 ½-inch high-density diskette can store 1.44 MB of
data.
Input/output (I/O) port
See Port.
Interface
A physical or software connection used to transmit data
between equipment or programs.
Internal command
An MS-DOS command that is stored in the command
processor of the operating system; it is not a separate program
file. Examples include COPY, DEL, RENAME, and DIR.
Jumper
A small device that connects two pins on an option card, the
SPF card, 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.
Glossary 11
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