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Glossary
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T
TFT display—See active-matrix display.
U
Universal Serial Bus (USB)—USB is a serial bus that supports a data
transfer rate of up to 480 Mbps (480 million bits per second). USB
can connect up to 127 peripheral devices through a single all-
purpose USB port. 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.
W
Web—See World Wide Web.
Wi-Fi
®
—A registered trademark term of the Wi-Fi Alliance that stands
for Wireless Fidelity, and is another term for the communication
protocol to permit an Ethernet connection using wireless
communication components.
World Wide Web (www)—The worldwide network of Web sites linked
together over the Internet. A user of the Web can jump from site to
site regardless of the location of the computer hosting the site. See
also Internet.