Epson Apex 20020 - Manual (Page 234)

Filename
A name of up to eight characters that MS-DOS uses to identify
a file.
Floppy disk
See Diskette.
Format
To prepare a new disk (or an old one you want to reuse) so that
it can store information. Formatting divides a disk into tracks
and sectors and creates addressable locations on it.
Graphics
Lines, angles, curves, and other nonalphanumeric data.
Hard disk
The enclosed unit used to store data permanently. Unlike a
diskette, it is fixed in place. It can process data more rapidly
and store many more files than a diskette.
Hardware
Any physical component of a computer system, such as a
monitor, printer, keyboard, or CPU.
Hexadecimal
A base 16 numbering system frequently used by programmers.
Any decimal number between 0 and 255 can be represented by
a two-digit hexadecimal number.
High-density
A type of diskette format that allows you to store more data
than normal. A 5 ¼-inch high-density diskette can store
1.2MB of data. A 3 ½-inch high-density, double-sided diskette
can store 1.44MB of data.