Weighted numerical code
A code is said to be weighted if the position of each symbol in each word corresponds to a weight set: eg 1, 10, 100, 1000 ... for decimal numbers, and 1, 2, 4, 8 ... for binary numbers.
Redundant code
Code using more symbols than necessary for representing information.
Redundancy is generally used for detecting and correcting possible errors.
Source Code
List of instructions of a program expressed in a language that humans can manipulate easily. Without source code it is very difficult to change a program.
Codec
Algorithm to compress and decompress audio and video without losing a considerable amount of information. Once a file has been compressed by a codec like MP3 or RealAudio, it is smaller and easier to pass on WebBut keeps sound quality true to the original.
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