decibel
(de��ci��bel) A unit of measurement used to express relative difference in power or intensity, usually between two acoustic or electric signals, equal to ten times the common logarithm (an exponent used in mathematical calculations to depict the perceived levels) of the ratio of the two levels. [Adapted from The American Heritage Dictionary ]
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- decimal
Refers to numbers in base 10 (the numbers we use in everyday life). For example, the following are decimal numbers: 9 100345000 -256 Note that a decimal number is not necessarily a number with a decimal point in it. Numbers with decimal points (that is, numbers with a fractional part) are called fixed-point or floating-point […]
- Decision Support System (DSS)
Abbreviated DSS, the term refers to an interactive computerized system that gathers and presents data from a wide range of sources, typically for business purposes. DSS applications are systems and subsystems that help people make decisions based on data that is culled from a wide range of sources. Examples of DSS For example: a national […]
- declare
In programming, to declare is to define the name and data type of a variable or other programming construct. Many programming languages, including C and Pascal, require you to declare variables before using them.
- decode
Decode refers to reversing the process of an encoding method. Data that has been encoded for storage or transmission is usually decoded for use and playback.
- decoder
A device or program that translates encoded data into its original format (e.g., it decodes the data). The term is often used in reference to MPEG-2 video and sound data, which must be decoded before it is output. Most DVD players, for example, include a decoder card whose sole function is to decode MPEG data. […]