18WuD2x

inclusive-OR • indexing 359
each position within the operands: an output of 1
results if one or both of the bits have a value of 1;
zero only if both are zero. Compare EXCLUSIVE-
OR.
incoherent light Electromagnetic radiation in the
visible spectrum in which the waves are not
aligned (not in phase) and can be of more than
one wavelength.
incoherent radiation Electromagnetic radiation in
which the waves are not aligned (not in phase)
and can be of more than one frequency or wavelength.
incoming inspection The examination of equipment
and materials as they enter a factory or laboratory,
for the purpose of identifying damaged or
faulty units.
incoming line A line that enters a device, facility,
or stage. Compare OUTGOING LINE.
Incompleteness Theorem A mathematical theorem
of significance in artificial intelligence. For
any consistent set of axioms (postulates), there
are always more true statements than provable
statements.
incomplete program Also called incomplete routine.
A computer program of generalized steps
that must be augmented with specific requirements
to be implemented for a given operation.
inconsistency Contradictory computer statements,
as detected by the program.
inconsistent equations A set of equations that
have no common solution.
Increductor A specialized radio-frequency magnetic
amplifier or saturable reactor.
increment 1. The difference between two successive
values of a variable. 2. A small change in a
quantity, such as mass, distance, or time. 3. A
quantity to be added to another quantity. 4. The
difference in value between adjacent hash marks
on a meter scale.
0
1
2
3
4 5 6
dc Volts
Increment = 0.5 V
increment, 4
incremental computer A computer that operates
on changes in variables. Example: differential analyzer.
incremental digital recorder A magnetic tape
recorder that moves the tape across the record
head in increments.
7
8
9
10
incremental display A device that converts digital
data into a form for display (characters; graphs).
incremental inductance The inductance exhibited
by an inductor, such as an iron-core choke,
carrying a direct current.
incremental permeability The permeability exhibited
by a material when an alternating-current
magnetizing force is superimposed upon a direct
current.
incremental plotter A device that, by direction of
a computer program, provides the results of a
program run in the form of curves or points on a
curve, along with annotational characters.
incremental representation For incremental
computers, a method of representing variables in
terms of changes in the variables.
incremental sensitivity The smallest change in a
quantity under measurement that can be detected
by the instrument used.
ind 1. Abbreviation of indicator. 2. Abbreviation of
INDUCTANCE (more commonly, L). 3. Abbreviation
of INDUCTOR (More commonly, L).
indefinite integral See INTEGRAL, 1.
Indeo Also called Digital Video Interactive (DVI). A
method of IMAGE COMPRESSION developed by
Intel Corporation.
independent equations A set of equations having
one common solution.
independent events In probability and statistics,
the case where the occurrence of one event has
no effect on the occurrence of another.
independent failure A circuit failure whose direct
cause is not related to malfunctions elsewhere in
the system.
independent mode In tracking supplies, an optional
method of operation in which the separate
units are adjustable independently of each other.
Compare TRACKING MODE.
independent variable A changing quantity whose
value at any instant is not governed by the value
of any other quantity. Compare DEPENDENT
VARIABLE.
index 1. A reference line, hair, or point (e.g., a file
index). 2. In mathematics, an exponent. 3. A ratio
of one quantity to another, as index of refraction.
4. In a computer memory, a table of references in
a key sequence; it can be addressed to find the
addresses of other data items. 5. A number that
is used to select a specific item within an array of
items in memory.
index counter Also called tape counter. In a magnetic
tape recorder, a (usually electromechanical)
counting device that the operator can refer to in
order to find material on the tape.
indexed address During or preceding the execution
of a computer program instruction, an address
that is modified by the content of an index register.
indexing 1. An information retrieval technique
used with files on a direct-access storage medium
or on tables in memory. 2. To modify an instruction
using an index word.