DEC Digital PC 3500 System Reference Manual page 184

Glossary
system utilities
Software designed to increase your computer's efficiency, determine whether it is
operating properly, and/or correct problems that might arise as you use your
computer. Some system utility software might be provided with your computer (such
as a Setup program). Other utility software is available from various commercial and
non-commercial sources. Examples of utility software include Stacker, PKZip, and
Norton Utilities.
upper memory
The area of memory between base memory (640 KB) and 1 MB. When properly
configured, Windows 95 or Windows NT Workstation can load device drivers, and
memory-resident software into upper memory. While the upper memory area can be
configured as expanded memory, expanded memory is not limited to the upper
memory area.
Universal Serial Bus (USB)
The USB is a new industry standard bi-directional bus designed to work with the PC
architecture for connecting slow and medium speed (12 Mb/s) external peripherals to
computer systems in a dynamically attachable, consistent, structured and low-cost
manner. USB has capabilities similar to today's PC external peripheral connections
(serial ports, parallel ports, keyboard and mouse ports), but extends them in several
significant ways.
video adapter
Also called a video controller or video board. A board that enables your computer to
display information on a monitor screen.
video controller
The electronic circuitry which enables your computer to display information on a
monitor screen. This might be provided on a video adapter or on the main logic
board. In the latter case, it is referred to as onboard video.
Windows
Software that provides a graphical user interface for use in operating your computer.
ZIF socket
Zero Insertion Force socket - These sockets are provided for easy upgrade of
processors. They require no tools for removing and replacing the processor chip.
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