Page 154 - Electrical Engineering Dictionary

compensator a system block added to complementary arithmetic a method of
an existing system (or process) to produce performing integer arithmetic within a com-
a combined transfer function that improves puter, in which negative numbers are repre-
its performance when connected in a closed sented in such a way that the arithmetic may
loop configuration. See also compensation, be performed without regard to the sign of
pre-compensator and post-compensator. each number.

compensatory behavior human dy- complementary cumulative distribution
namic behavior in which the operator’s ac- function (CCDF) a function describ-
tions are conditioned primarily by the closed- ing the probability p(x) of achieving all out-
loop man-machine system errors. comes in an experiment greater than x.

compensatory display for the simplest complementary metal oxide semiconduc-
case, a display which shows only the differ- tor (CMOS) (1) refers to the process that
ence between the desired input command and combines n-channel and p-channel transis-
the system output. torsonthesamepieceofsilicon(complemen-
tary). The transistors are traditionally made
compiler a program that translates a of layers of metal, oxide, and semiconductor
high level language program into an exe- materials, though the metal layer is often re-
cutable machine instruction program or other placed by polysilicon. There are a number
lower-level form such as assembly language. of variations such as HCMOS, high-speed
See also linker, assembler, interpreter, CMOS which scales down the elements com-
cross-assembler, cross-compiler. pared to the standard MOS process and thus
increases the speed and reduces the power
complement (1) to swap 1’s for 0’s and consumption for each transistor in the CPU.
0’s for 1’s in a binary number. (2) a CMOS memory device used in com-
puters to store information that must be avail-
(2) opposite form of a number system.
able at startup. The information is main-
tained in the device by a small battery.
complement of a fuzzy set the members
outside of a fuzzy set but within the universe
complete statistic a sufficient statistic T
of discourse. Represented by the symbol ¬.
where every real-valued function of T is zero
Let A be a fuzzy set in the universe of dis-
with probability one whenever the mathe-
course X with membership function µ A (x),
matical expectation of that function of T is
x ∈ X. The membership function of the
zero for all values of the parameter. In other
complement of A , for all x ∈ X,is
words, if W is real-valued function, then T is
complete if
µ ¬A (x) = 1 − µ A (x)
E θ W(T ) = 0∀θ ∈ 2 ⇒ P θ [W(T ) = 0]
Seealsocomplement, fuzzyset, membership = 1∀θ ∈ 2
function.

complement operator the logical NOT completion unit See retire unit.
operation. In a crisp (non-fuzzy) system, the
complement of a set A is the set of the ele- complex amplitude magnitude of a
ments that are not members of A. The fuzzy nearly harmonic function, complex to in-
complement represents the degree to which clude phase deviations from a reference
an element is not a member of the fuzzy set. wave.

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2000 by CRC Press LLC