PERFORMANCE
Performance refers to a product's primary operating characteristics.
FEATURES
Features refer to a product's secondary product characteristics (i.e., the "bells & whistles"). They supplement the product's
basic functioning characteristic(s).
CONFORMANCE TO SPECIFICATIONS
Conformance refers to the degree to which a product's design & operating characteristics meet prior established standards.
Conformance to specifications focuses attention on the internal & operating view of quality. It is the basic subject matter of
statistical quality control (SQC). SQC is a body of knowledge that allows tools & measurement standards to be developed in
a continuous & economical way. Objectives are to find & eliminate "assignable causes" leading to defective products prior
to the realization of any actual nonconforming conditions.
RELIABILITY
Reliability refers to the likelihood of a product failure (malfunction) with a specified time period. Reliability must be "designed"
into a product. If a product, as designed, is inherently unreliable, nothing can be done in the manufa
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