DISCRETE


The word '''discrete''' comes from the 15th Century Latin word ''discretus'' which means ''separate''. It is used with different meanings in different contexts:

★ In perception, a ''discrete entity'' is something that can be perceived individually and not as connected to, or part of something else.

★ In topology, a branch of mathematics, a ''discrete space'' is a topological space in which all sets are open, and a ''discrete set'' is a set of isolated points.

★ In discrete mathematics, without notion of continuity, a discrete set is a countable set; this concept is also important for combinatorics, probability theory, and statistical theory.

★ In statistics a ''discrete random variable'' defines a particular type of variable in a discrete probability distribution (in contrast to a continuous random variable).

★ In discrete mathematics and in theoretical computer science, the abstract world is usually modeled as a ''discrete space'' with ''discrete time''.

★ In electrical engineering and electronic engineering, ''discrete'' means having separate electronic components, such as individual resistors and inductors. This is the opposite of integrated circuitry.

★ In audio engineering, ''discrete'' means having separate and independent channels of audio, as opposed to matrixed stereo or quadrophonic, or other multi-channel sound.

★ A ''discrete signal'' in information theory and signal processing

★ In music, a ''discrete pitch'' is one with a steady frequency, rather than an indiscrete gliding, glissando or portamento, pitch.

★ In project management, discrete effort is any activity with a pre-defined state of completion; the opposite of discrete effort is continuous, operational or ongoing effort.
This word '''' (separable) is ''not'' the same as '''' (prudent, private). Two e's apart, versus in tryst.

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