# Binary Digit

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## binary digit

[′bīn·ə·rē ′dij·ət]
(computer science)

## Binary Digit

(in information theory), a unit used to measure entropy and the quantity of information. An entropy of 1 binary digit (1 bit) has a source with two equiprobable messages. The term is derived from the fact that the number of binary digits determines (to an accuracy of 1) the average number of characters required to record messages from a given source in the binary code. Decimal digits (decit) are also used. The conversion from one digit to another corresponds to the change in the base of logarithms when the entropy and the quantity of information are being determined (10 instead of 2). The conversion formula is 1 decit = 1/log 2 bits ≈ 3.32 bits.

References in periodicals archive ?
The second person was also attached to an EEG amplifier and their PC would pick up the stream of binary digits and flash an LED lamp at two different frequencies, one for zero and the other one for one.
30 frames per second), we actually have to send 221,184,000 binary digits per second.
For example, when there are two or more secrets expressed as binary digits, more possibilities are ruled out when you ask whether the sum of the secret digits is an even number than when you ask whether the first digit is 1.
These binary digits sent in intermittent bursts of incomplete information make TDMA less vulnerable to cloning fraud and eavesdropping.
Each string of binary digits, or bits, tells the beam at the back of your TV how bright to make each dot.
It all sounds like the plot of a (mediocre) science fiction novel: strange beings with names like the Cancelbunny, an 144108, XS4ALL, and Scamizdat, fighting on a battleground with no fixed location any where on earth, using strings of binary digits as their weapons.
A microphone picks up the individual's speech that is in analog or wave form, and the speech waves are broken down into patterns of binary digits by a digital signal processor to represent the vocal sounds of human speech.
But there's no way to convert the result into its decimal equivalent without knowing all the binary digits that come before the one of interest.
Today's 32-bit Intel chips can process 32 binary digits at a time.
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