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Glossary
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extension—See file extension.
external device—See device.
F
file—A collection of related information, saved on disk with a unique
name. A file may be a program, information used by a program, or a
document. See also document.
file name—A set of characters that uniquely identifies a file within a
particular folder. It consists of two parts: the actual name and the file
name extension. See also file extension.
file extension—The three characters following the period (pronounced
“dot”) at the end of a file name. The extension indicates the type of
file. Examples are .apk for application files and .pdf for
documentation files. See also file name.
folder—A container for organizing files saved to a disk. A folder is
symbolized on screen by a graphical image (icon) of a file folder. A
folder can contain files and other folders.
G
ground—A conductor to which all components of an electric circuit are
connected. It has a potential of zero (0) volts, is connected to the
earth, and is the point of reference for voltages in the circuit.
H
hard disk—A storage device composed of a rigid platter or platters that
can be magnetically coded with data. Hard disks hold much more
information than some other external media and are used for long-
term storage of programs and data. The primary (or only) hard disk
in a tablet device is usually fixed.
hardware—The physical components of a tablet system. Compare
software.
HDMI (High-Definition Multimedia Interface)—An interface
used to transmit high quality audio and video signal via a single
cable in digital format, providing better picture quality than analog
signal.
hot swapping—The ability to add or remove devices from the tablet
while it is running and have the operating system automatically
recognize the change.