In telecommunication, bit pairing is the practice of establishing, within a code set, a number of subsets that have an identical bit representation except for the state of a specified bit.
Note: An example of bit pairing occurs in the International Alphabet No. 5 and the American Standard Code for Information Interchange (ASCII), where the upper case letters are related to their respective lower case letters by the state of bit six.
Keyboards used on ASCII terminals originally were designed so that the least significant bits of both characters on the key were the same; such terminals were called bit-pairing keyboards.
One could obtain a line-drawing character set for it, for use with forms, a set of characters that allowed very large characters to be built up on the screen, or a set of characters designed for producing mathematical equations.
Because of the different structure of this code, a different bit is chosen to be the one inverted by the shift key.
Bit error indicates the number of bitsbit (sometimes abbreviated b, see below) is the most basic information unit used in computing and information theory.
A single bit is a one or a zero, a true or a false, a "flag" which is "on" or "off", or in general, the quantity of information required to distinguish two mutually exclusive states from each other.
Commonly notated as Bit error ratio In telecommunication, an error ratio is the ratio of the number of bits, elements, characters, or blocks incorrectly received to the total number of bits, elements, characters, or blocks sent during a specified time interval.
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