Digital Equipment DEC 3000 500X AXP Owner's Manual page 239

asynchronous communication
A type of communications in which data is transmitted at
different time intervals. Compare with synchronous.
AUI (Attachment Unit Interface) Ethernet network
An IEEE standard 802.3-compliant Ethernet network made of
standard Ethernet cable, as opposed to ThinWire Ethernet cable.
Also called standard Ethernet. Compare with ThinWire Ethernet
network. See standard Ethernet network or thickwire Ethernet
network.)
autoboot
The process by which the system boots automatically.
backup copy
A copy of files or software made for safekeeping. Making a
backup copy of the data stored on your disk allows you to recover
that data after an accidental loss. You can make backup copies
on tape cartridges.
baud rate
The speed at which signals are serially transmitted over a
communications line. Baud rates can be measured in bits per
second or characters per second. One baud equals one bit per
second; eight bauds equals one character per second.
bit
A binary digit; the smallest unit of information in a binary
system of notation, designated as a 0 or a 1.
boot
Short for bootstrap, meaning to bring a device or system to a
defined state where it can operate on its own.
boot (or bootstrap) device
The memory storage device that holds the software that carries
out a system bootstrap procedure.
Glossary–2