Epson Apex, User Manual

Page: 143 / 158

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 l/4-inch high-density diskette can store
1.2MB of data. High density diskette drives are not supported
by the Apex disk controller.
Input/output (I/O) port
See Port.
Interface
A physical or software connection used to transmit data be-
tween equipment or programs.
Joystick
A pointing device that uses a moveable stick mounted in a
socket. When you push the stick in a certain direction, the
cursor moves in the same direction on the screen.
Keyboard
A device to enter letters and numbers to the computer that
consists of a number of typewriter-like keys mounted on a
board.
Kilobyte (KB)
A unit used to measure storage space (in a computer’s memory
or on a disk). One kilobyte equals 1024 bytes.
6 Glossary