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integrated. Arranged together as one unit.
interference. (1) The prevention of clear reception of
broadcast signals. (2) The distorted portion of a
received signal.
interrupt. (1) A suspension of a process, such as
execution of a computer program, caused by an
external event and performed in such a way that the
process can be resumed. (A) (2) To stop a process in
such a way that it can be resumed. (3) A means of
passing processing control from one software or
microcode module or routine to another, or of requesting
a particular software, microcode, or hardware function.
J
jabber. Transmission by a data station beyond the
time interval allowed by the protocol. (T)
K
K. When referring to storage capacity, a symbol that
represents two to the tenth power, or 1024.
keyboard. A group of numeric keys, alphabetic keys,
special character keys, or function keys used for
entering information into the terminal and into the
system.
L
LAN. See local area network.
LAN adapter. The circuit card within a communicating
device (such as a personal computer) that, together with
its associated software, enables the device to be
attached to a LAN.
LCD. Liquid crystal display
LED. Light-emitting diode.
light-emitting diode (LED). A semiconductor chip that
gives off visible or infared light when activated.
line. On a terminal, one or more characters entered
before a return to the first printing or display position.
link. (1) The logical connection between nodes
including the end-to-end link control procedures. (2) The
combination of physical media, protocols, and
programming that connects devices on a network. (3) In
computer programming, the part of a program, in some
cases a single instruction or an address, that passes
control and parameters between separate portions of
the computer program. (4) To interconnect items of data
or portions of one or more computer programs. (5) In
SNA, the combination of the link connection and link
stations joining network nodes. See also link
connection. Note: A link connection is the physical
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medium of transmission; for example, a telephone wire
or a microwave beam. A link includes the physical
medium of transmission, the protocol, and associated
devices and programming; it is both logical and
physical.
link connection. (1) All physical components and
protocol machines that lie between the communicating
link stations of a link. The link connection may include a
switched or leased physical data circuit, a LAN, or an
X.25 virtual circuit. (2) In SNA, the physical equipment
providing two-way communication and error correction
and detection between one link station and one or more
other link stations. (3) In the IBM Store System, the
logical link providing two-way communication of data
from one network node to one or more other network
nodes.
load. In computer programming, to enter data into
memory or working registers.
local area network (LAN). A computer network
located on a user's premises within a limited
geographical area. Note: Communication within a LAN
is not subject to external regulations; however,
communication across the LAN boundary may be
subject to some form of regulation.
logon. The procedure for starting up a point-of-sale
terminal or store controller for normal sales operations
by sequentially entering the correct security number and
transaction number. Synonymous with sign-on.
M
magnetic ink character reader (MICR). An input unit
that reads characters by magnetic ink character
recognition. (A)
magnetic ink character recognition. (1) MICR.
Character recognition of magnetic ink characters. (T) (2)
The identification of characters through the use of
magnetic ink.
MB. See megabyte.
Mbps. One million bits per second.
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.
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
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