Toshiba Portege R100 User Manual page 155

GND: Ground. An RS-232C signal used in the exchange of data between
a computer and serial device.
graphics: The use of drawings, pictures, or other images, such as charts
or graphs, to present information.
H
hard disk: A non-removable disk usually referred to as drive C. The
factory installs this disk and only a trained engineer can remove it
for servicing. Also called fixed disk.
hard disk drive (HDD): An electromechanical device that reads and
writes a hard disk. See also hard disk.
hardware: The physical electronic and mechanical components of a
computer system: typically, the computer itself, external disk
drives, etc. See also software and firmware.
hertz: A unit of wave frequency that equals one cycle per second.
hexadecimal: The base 16 numbering system composed of the digits 0
through 9 and the letters A, B, C, D, E, and F.
host computer: The computer that controls, regulates, and transmits
information to a device or another computer.
hot dock/undock: Connecting or disconnecting a device to or from the
computer while the computer's power is turned on.
hot key: The computer's feature in which certain keys in combination with
the extended function key, Fn, can be used to set system
parameters, such as speaker volume.
HW Setup: A TOSHIBA utility that lets you set the parameters for various
hardware components.
I
icon: A small graphic image displayed on the screen or in the indicator
panel. In Windows, an icon represents an object that the user can
manipulate.
infrared port: A cableless communications capable of using infrared
signals to send serial data.
input: The data or instructions you provide to a computer, communication
device or other peripheral device from the keyboard or external or
internal storage devices. The data sent (or output) by the sending
computer is input for the receiving computer.
instruction: Statements or commands that specify how to perform a
particular task.
Portégé R100
Glossary
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