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Definition of "Null Character" |
[NUL] A control character that is used to accomplish media-fill stuffing or a time-fill stuffing in storage device or in a data transmission line and that may be inserted and removed from a series of characters without affecting the meaning of the series. Also refer to the Table of ASCII characters. / A character denoting nothing, usually represented by a binary zero. / A character that has all its bits set to 0. A null character, therefore, has a numeric value of 0, but it has a special meaning when interpreted as text. In some programming languages, notably C, a null character is used to mark the end of a character string. In database and spreadsheet applications, null character are often used as padding and are displayed as spaces. / Automatic Repeat Query, is an error-control method for data transmission that uses acknowledgements messages sent by the receiver indicating that it has correctly received a data frame or packet and timeouts,specified periods of time allowed to elapse before an acknowledgment is to be received to achieve reliable data transmission over an unreliable service. |
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