IBM RT PC Problem Determination Manual page 186

In data communications, a
terminal.
device, usually equipped with a keyboard
and a display, capable of sending and
receiving information over
communications lines.
Two seven-segment
two-digit display.
light-emitting diodes (LEDs) on the
operator panel used to track the progress
of power-on self-tests (POSTs).
A service; in programming, a
utility.
program that performs a common service
function.
ID ID). A series of
Volume (Vol
characters recorded on the diskette used
X-4 Problem Determination Guide
to identify the diskette to the user and to
the system.
A device at which an
work station.
individual may transmit information to, or
receive information from, a computer for
the purpose of performing a task (for
example, a display station or printer).
A test that checks attachment
wrap test.
or controller circuitry without testing the
device itself.
write-protect notch.
diskette that allows the diskette drive to
write on it. When it is covered, the
diskette is said to be write-protected since
the diskette drive is physically prohibited
from the write operation.
The notch in a