IBM 4846-545 Service Guide - Page 187

architecture.

Get IBM 4846-545 - SurePOS 500 - 512 MB RAM PDF manuals and user guides View all IBM 4846-545 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 187 highlights

megabyte (MB) . A unit of measure for data. 1 megabyte = 1 048 576 bytes. memory. Program-addressable storage from which instructions and other data can be loaded directly into registers for subsequent execution or processing. memory key. A USB removable storage device. message. (1) An arbitrary amount of information whose beginning and end are defined or implied. (2) A group of characters and control bit sequences transferred as an entity. (3) In telecommunication, a combination of characters and symbols transmitted from one point to another. (4) A logical partition of the user device's data stream to and from the adapter. See also error message, operator message. MICR. See magnetic ink character reader and magnetic ink character recognition. module. A program unit that is discrete and identifiable with respect to compiling, combining with other units, and load; for example, the input to, or output from, an assembler, compiler, linkage editor, or executive routine. N network. (1) A configuration of data processing devices and software connected for information interchange. (2) An arrangement of nodes and connecting branches. Connections are made between data stations. network architecture. The logical structure and operating principles of a computer network. Note: The operating principles of a network include those of services, functions, and protocols. noise. (1) A disturbance that affects a signal and that can distort the information carried by the signal. (2) Random variations of one or more characteristics of any entity, such as voltage, current, or data. (3) Loosely, any disturbance tending to interfere with normal operation of a device or system. nonvolatile random access memory (NVRAM) . Random access memory that retains its contents after electrical power is shut off. Contrast with volatile memory. NVRAM. See nonvolatile random access memory. O operating system. Software that controls the execution of programs and that may provide services such as resource allocation, scheduling, input/output control, and data management. Although operating systems are predominantly software, partial hardware implementations are possible. (T) Operating System/2® (OS/2®). A set of programs that control the operation of high-speed large-memory IBM Personal Computers providing multitasking. Contrast with Disk Operating System (DOS). operator. A person who operates a machine. operator message. A message from the operating system or a program telling the operator to perform a specific function or informing the operator of a specific condition within the system, such as an error condition. option. (1) A specification in a statement, a selection from a menu, or a setting of a switch, that can be used to influence the execution of a program. (2) A hardware or software function that can be selected or enabled as part of a configuration process. (3) A piece of hardware (such as a network adapter) that can be installed in a device to modify or enhance device function. OS. Operating system. OS/2. Operating System/2. P page. The information displayed at the same time on the screen of a display device. panel. (1) A thin flat sheet, usually (a) of pressed metal and carrying controls and indicators, (b) of glass, or (c) of plastic. (2) A formatted display of information that appears on a display screen. parallel port. A port that transmits the bits of a byte in parallel along the lines of the bus, one byte at a time, to an I/O device. On a personal computer, it is used to connect a device that uses a parallel interface, such as a dot matrix printer, to the computer. Contrast with serial port. PC. See personal computer. personal computer (PC). A desk-top, free-standing, or portable microcomputer that usually consists of a system unit, a display, a keyboard, one or more diskette drives, internal fixed-disk storage, and an optional printer. PCs are designed primarily to give independent computing power to a single user and are inexpensively priced for purchase by individuals or small businesses. Examples include the various models of the IBM Personal Computers. plug. (1) A connector for attaching wires from a device to a cable, such as a store loop. A plug is inserted into a receptacle or plug. (2) To insert a connector into a receptacle or socket. Plug and Play (PnP). Pertaining to the capability of a hardware or software component to be installed on a system with minimal effort and to be available for use immediately thereafter. Glossary 165

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
  • 187
  • 188
  • 189
  • 190
  • 191
  • 192
  • 193
  • 194
  • 195
  • 196
megabyte
(MB)
.
A
unit
of
measure
for
data.
1
megabyte
=
1
048
576
bytes.
memory.
Program-addressable
storage
from
which
instructions
and
other
data
can
be
loaded
directly
into
registers
for
subsequent
execution
or
processing.
memory
key.
A
USB
removable
storage
device.
message.
(1)
An
arbitrary
amount
of
information
whose
beginning
and
end
are
defined
or
implied.
(2)
A
group
of
characters
and
control
bit
sequences
transferred
as
an
entity.
(3)
In
telecommunication,
a
combination
of
characters
and
symbols
transmitted
from
one
point
to
another.
(4)
A
logical
partition
of
the
user
device’s
data
stream
to
and
from
the
adapter.
See
also
error
message
,
operator
message
.
MICR.
See
magnetic
ink
character
reader
and
magnetic
ink
character
recognition.
module.
A
program
unit
that
is
discrete
and
identifiable
with
respect
to
compiling,
combining
with
other
units,
and
load;
for
example,
the
input
to,
or
output
from,
an
assembler,
compiler,
linkage
editor,
or
executive
routine.
N
network.
(1)
A
configuration
of
data
processing
devices
and
software
connected
for
information
interchange.
(2)
An
arrangement
of
nodes
and
connecting
branches.
Connections
are
made
between
data
stations.
network
architecture.
The
logical
structure
and
operating
principles
of
a
computer
network.
Note:
The
operating
principles
of
a
network
include
those
of
services,
functions,
and
protocols.
noise.
(1)
A
disturbance
that
affects
a
signal
and
that
can
distort
the
information
carried
by
the
signal.
(2)
Random
variations
of
one
or
more
characteristics
of
any
entity,
such
as
voltage,
current,
or
data.
(3)
Loosely,
any
disturbance
tending
to
interfere
with
normal
operation
of
a
device
or
system.
nonvolatile
random
access
memory
(NVRAM)
.
Random
access
memory
that
retains
its
contents
after
electrical
power
is
shut
off.
Contrast
with
volatile
memory
.
NVRAM.
See
nonvolatile
random
access
memory.
O
operating
system.
Software
that
controls
the
execution
of
programs
and
that
may
provide
services
such
as
resource
allocation,
scheduling,
input/output
control,
and
data
management.
Although
operating
systems
are
predominantly
software,
partial
hardware
implementations
are
possible.
(T)
Operating
System/2
®
(OS/2
®
).
A
set
of
programs
that
control
the
operation
of
high-speed
large-memory
IBM
Personal
Computers
providing
multitasking.
Contrast
with
Disk
Operating
System
(DOS)
.
operator.
A
person
who
operates
a
machine.
operator
message.
A
message
from
the
operating
system
or
a
program
telling
the
operator
to
perform
a
specific
function
or
informing
the
operator
of
a
specific
condition
within
the
system,
such
as
an
error
condition.
option.
(1)
A
specification
in
a
statement,
a
selection
from
a
menu,
or
a
setting
of
a
switch,
that
can
be
used
to
influence
the
execution
of
a
program.
(2)
A
hardware
or
software
function
that
can
be
selected
or
enabled
as
part
of
a
configuration
process.
(3)
A
piece
of
hardware
(such
as
a
network
adapter)
that
can
be
installed
in
a
device
to
modify
or
enhance
device
function.
OS.
Operating
system.
OS/2.
Operating
System/2.
P
page.
The
information
displayed
at
the
same
time
on
the
screen
of
a
display
device.
panel.
(1)
A
thin
flat
sheet,
usually
(a)
of
pressed
metal
and
carrying
controls
and
indicators,
(b)
of
glass,
or
(c)
of
plastic.
(2)
A
formatted
display
of
information
that
appears
on
a
display
screen.
parallel
port.
A
port
that
transmits
the
bits
of
a
byte
in
parallel
along
the
lines
of
the
bus,
one
byte
at
a
time,
to
an
I/O
device.
On
a
personal
computer,
it
is
used
to
connect
a
device
that
uses
a
parallel
interface,
such
as
a
dot
matrix
printer,
to
the
computer.
Contrast
with
serial
port
.
PC.
See
personal
computer
.
personal
computer
(PC).
A
desk-top,
free-standing,
or
portable
microcomputer
that
usually
consists
of
a
system
unit,
a
display,
a
keyboard,
one
or
more
diskette
drives,
internal
fixed-disk
storage,
and
an
optional
printer.
PCs
are
designed
primarily
to
give
independent
computing
power
to
a
single
user
and
are
inexpensively
priced
for
purchase
by
individuals
or
small
businesses.
Examples
include
the
various
models
of
the
IBM
Personal
Computers.
plug.
(1)
A
connector
for
attaching
wires
from
a
device
to
a
cable,
such
as
a
store
loop.
A
plug
is
inserted
into
a
receptacle
or
plug.
(2)
To
insert
a
connector
into
a
receptacle
or
socket.
Plug
and
Play
(PnP).
Pertaining
to
the
capability
of
a
hardware
or
software
component
to
be
installed
on
a
system
with
minimal
effort
and
to
be
available
for
use
immediately
thereafter.
Glossary
165