IBM 4846-545 Service Guide - Page 185

pluggable.

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driver. A software component that controls a device. dump. (1) To record, at a particular instant, the contents of all or part of one storage device in another storage device. Dumping is usually for the purpose of debugging. (T) (2) Data that has been dumped. (T) DVD-ROM. Digital-video-disk read-only memory. E error message. A message that is issued because an error has been detected. F FCC. See Federal Communications Commission. feature. A part of an IBM product that may be ordered separately by the customer. Federal Communications Commission (FCC). A board of commissioners appointed by the President under the Communications Act of 1934, having the power to regulate all interstate and foreign communications by wire and radio originating in the United States. field. On a data medium or a storage medium, a specified area used for a particular category of data; for example, a group of character positions used to enter or display wage rates on a panel. (T) file. A named set of records stored or processed as a unit. (T) For example, an invoice may form a record and the complete set of such records may form a file. See also data set. . FSB. Another name for the system bus. The system bus is also called the frontside bus, memory bus, local bus, or host bus. flash memory. A data-storage device that is programmable, erasable, and does not require continuous power. The chief benefit of flash memory over other programmable and erasable data storage devices is that it can be reprogrammed without being removed from the circuit board. formatted diskette. A diskette on which track and sector control information has been written and that can be used by the computer to store data. Note: A diskette must be formatted before it can receive data. frame . (1) The unit of transmission in some LANs, including the IBM Token-Ring Network and the IBM PC Network. It includes delimiters, control characters, information, and checking characters. On a token-ring network, a frame is created from a token when the token has data appended to it. On a token-bus network (IBM PC Network), all frames including the token frame contain a preamble, start delimiter, control address, optional data and checking characters, end delimiter, and are followed by a minimum silence period. (2) A housing for machine elements. (3) In synchronous data link control (SDLC), the vehicle for every command, every response, and all information that is transmitted using SDLC procedures. Each frame begins and ends with a flag. function. (1) A specific purpose of an entity, or its characteristic action. (A) (2) In data communications, a machine action such as a carriage return or line feed. (A) G Ghz. The abbreviation for gigahertz. One GHz represents 1 billion cycles per second. The speed of microprocessors, called the clock speed, often is measured in gigahertz. H hard-disk drive. In a personal computer system unit, a disk storage device that reads and writes on rigid magnetic disks. It is faster and has a larger storage capacity than a diskette and is permanently installed. Synonymous with fixed disk. HID. See human interface devices. hot pluggable. Refers to a hardware component that can be installed or removed without disturbing the operation of any other resource that is not connected to, or dependent on, this component. human interface devices (HID). Devices which allow humans to interact and communicate with a computer. Examples are a keyboard or a mouse. hot plugging. Process of installing connections to the serial bus while the system is running and without powering down. hot unplugging. Process of removing connections from the serial bus while the system is running and without powering down. hypertext. (1) A method of presenting text in discrete units, or nodes, that are connected by links for navigation. (2) Text designed to be read or accessed in a nonlinear manner using nodes that are connected by links for navigation. I I/O. See input/output. Glossary 163

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driver.
A
software
component
that
controls
a
device.
dump.
(1)
To
record,
at
a
particular
instant,
the
contents
of
all
or
part
of
one
storage
device
in
another
storage
device.
Dumping
is
usually
for
the
purpose
of
debugging.
(T)
(2)
Data
that
has
been
dumped.
(T)
DVD-ROM.
Digital-video-disk
read-only
memory.
E
error
message.
A
message
that
is
issued
because
an
error
has
been
detected.
F
FCC.
See
Federal
Communications
Commission.
feature.
A
part
of
an
IBM
product
that
may
be
ordered
separately
by
the
customer.
Federal
Communications
Commission
(FCC).
A
board
of
commissioners
appointed
by
the
President
under
the
Communications
Act
of
1934,
having
the
power
to
regulate
all
interstate
and
foreign
communications
by
wire
and
radio
originating
in
the
United
States.
field.
On
a
data
medium
or
a
storage
medium,
a
specified
area
used
for
a
particular
category
of
data;
for
example,
a
group
of
character
positions
used
to
enter
or
display
wage
rates
on
a
panel.
(T)
file.
A
named
set
of
records
stored
or
processed
as
a
unit.
(T)
For
example,
an
invoice
may
form
a
record
and
the
complete
set
of
such
records
may
form
a
file.
See
also
data
set
.
.
FSB.
Another
name
for
the
system
bus.
The
system
bus
is
also
called
the
frontside
bus,
memory
bus,
local
bus,
or
host
bus.
flash
memory.
A
data-storage
device
that
is
programmable,
erasable,
and
does
not
require
continuous
power.
The
chief
benefit
of
flash
memory
over
other
programmable
and
erasable
data
storage
devices
is
that
it
can
be
reprogrammed
without
being
removed
from
the
circuit
board.
formatted
diskette.
A
diskette
on
which
track
and
sector
control
information
has
been
written
and
that
can
be
used
by
the
computer
to
store
data.
Note:
A
diskette
must
be
formatted
before
it
can
receive
data.
frame
.
(1)
The
unit
of
transmission
in
some
LANs,
including
the
IBM
Token-Ring
Network
and
the
IBM
PC
Network.
It
includes
delimiters,
control
characters,
information,
and
checking
characters.
On
a
token-ring
network,
a
frame
is
created
from
a
token
when
the
token
has
data
appended
to
it.
On
a
token-bus
network
(IBM
PC
Network),
all
frames
including
the
token
frame
contain
a
preamble,
start
delimiter,
control
address,
optional
data
and
checking
characters,
end
delimiter,
and
are
followed
by
a
minimum
silence
period.
(2)
A
housing
for
machine
elements.
(3)
In
synchronous
data
link
control
(SDLC),
the
vehicle
for
every
command,
every
response,
and
all
information
that
is
transmitted
using
SDLC
procedures.
Each
frame
begins
and
ends
with
a
flag.
function.
(1)
A
specific
purpose
of
an
entity,
or
its
characteristic
action.
(A)
(2)
In
data
communications,
a
machine
action
such
as
a
carriage
return
or
line
feed.
(A)
G
Ghz.
The
abbreviation
for
gigahertz.
One
GHz
represents
1
billion
cycles
per
second.
The
speed
of
microprocessors,
called
the
clock
speed,
often
is
measured
in
gigahertz.
H
hard-disk
drive.
In
a
personal
computer
system
unit,
a
disk
storage
device
that
reads
and
writes
on
rigid
magnetic
disks.
It
is
faster
and
has
a
larger
storage
capacity
than
a
diskette
and
is
permanently
installed.
Synonymous
with
fixed
disk
.
HID.
See
human
interface
devices
.
hot
pluggable.
Refers
to
a
hardware
component
that
can
be
installed
or
removed
without
disturbing
the
operation
of
any
other
resource
that
is
not
connected
to,
or
dependent
on,
this
component.
human
interface
devices
(HID).
Devices
which
allow
humans
to
interact
and
communicate
with
a
computer.
Examples
are
a
keyboard
or
a
mouse.
hot
plugging.
Process
of
installing
connections
to
the
serial
bus
while
the
system
is
running
and
without
powering
down.
hot
unplugging.
Process
of
removing
connections
from
the
serial
bus
while
the
system
is
running
and
without
powering
down.
hypertext.
(1)
A
method
of
presenting
text
in
discrete
units,
or
nodes,
that
are
connected
by
links
for
navigation.
(2)
Text
designed
to
be
read
or
accessed
in
a
nonlinear
manner
using
nodes
that
are
connected
by
links
for
navigation.
I
I/O.
See
input/output
.
Glossary
163