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4023
Users
APPENDIX
E
GLOSSARY
(cont.)
Peripheral
devices— Generally
refers
to the
equipment
used
in
support
of,
or
under
control
of,
the
computer. Used
in
this
manual
to
mean
equipment
other than the
computer
or
Terminal.
Serialization—
The
process
of
converting simultaneously-
occurring
(parallel)
data
bits
into
sequentially-occurring
(serial)
data
bits.
Plug— The most
portable of
two
mating
connectors.
Serial
Transmission—
Sequential transmission of
single
data
bits.
Program—
A
pre-defined
course
of action
which
controls
computer
or
other
equipment
operation.
May
be written
on
paper,
punched on
tape,
stored
on
a
magnetic
storage
device, or stored
in
computer
or
other
equipment
memory.
Program
command—
A
command
sent
from
the
computer
to
the Terminal or
to peripheral
equipment
as a result
of
a
program
decision.
Protected
Data—
Data
identified
by
a Field
Attribute
Code
that
cannot
be
changed by
a
keyboard
entry.
Receiving—
Receiving data
from
another
device.
SHIFT
key—
A
key
on
the
Terminal
keyboard
whose
function
is
comparable
to that of a
typewriter
shift
key.
Shifted
character—
A
character
resulting
from
pressing
a
symbol key
while the
SHIFT
key
is
held
down.
Signal lines—
Wires
which
are
used
to
send
command
signals
between
or
within
devices.
Software—
Programs, procedures
and
techniques
for
direct-
ing
the
hardware (computer.
Terminal,
etc.)
to
perform
desired functions.
Reset—
Can
refer
to
the
RESET
switch or
one
of
many
functions
it
controls.
See
RESET
switch
description.
Space— The
horizontal area allocated to writing
a
character.
Also, the
movement
from
a
character writing area to the
next
writing
area.
Also,
the
command
which
causes such
movement
without
causing character
writing.
Return—
See
carriage return.
Also the
keyboard
name
for
control character
CR.
Standard accessory—
A
device
which
is
supplied
with
the
basic
Terminal.
Roll-up—
The
Terminal
feature that
when
communicating
in
DIRECT,
enables the displayed data
to roll-up
one
line
when
attempting
to
perform
a
line
feed
past
the
bottom
line.
Ruling Characters—
An
optional display
package
that
can be
ordered
to
permit the Terminal
to
draw
lines
for
forms,
charts,
etc.
Screen— That
area of
the Terminal's
display unit
on which
data
is
displayed.
The
face of
the cathode-ray storage
tube.
Send
Function—
A
transmission
function
initiated
by
simultaneously
pressing
the
SEND-ENTER
and
SHIFT
keys.
This function permits
all
data that
resides
between
Message
Separators to be transmitted.
Standards, data
communication—
See data
communication
standards.
Store—
Synonomous
with Terminal
memory. The
placement
in
memory
of
computer and keyboard
data.
Strappable
options—
Operating
features
which
can
be
changed by
moving
a friction-held
wire
from one
point
to
another.
Telephone
line
connection—
A
communication
link
between
the
Terminal
and
computer.
Sometimes
generalized
to
include the associated
modems.
Timing— The
control
of
operations
between and
within
devices
with
respect to time.
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