140 Glossary
Suspend—A feature of some Windows® operating systems
that allows you to turn off the computer without exiting
your open applications and to continue from where you
left off when you turn the computer on again.
Swipe—Swipe an open window to the left or right of the
screen to display the next or previous window.
system prompt—The symbol (in the MS-DOS® operating
system, generally a drive letter followed by a “greater
than” sign) indicating where users are to enter
commands.
TTFT display—See

active-matrix display

.
Tile/Tiles—A list of square or rectangular icons on the Start
screen representing applications that can be accessed
by selecting them.
UUniversal Serial Bus (USB)—USB is a serial bus that
supports data transfer. USB allows hot swapping of
peripherals. See also

bus, hot swapping, serial

.
upload—To send a file to another computer through a
modem or network. See also

download

.
USB—See

Universal Serial Bus (USB)

.
USB Flash drive—A small, portable flash memory card that
plugs into a computer’s USB port and functions as a
portable hard drive. They are smaller and more durable
than an external hard drive because they do not contain
any internal moving parts, but have less storage
capacity. See also

Universal Serial Bus (USB)

.
utility—A computer program designed to perform a narrowly
focused operation or solve a specific problem. Utilities
are often related to computer system management.