释义 |
megabyte
meg·a·byte M0197750 (mĕg′ə-bīt′)n. Abbr. MB1. A unit of computer memory or data storage capacity equal to 1,048,576 (220) bytes.2. One million bytes. See Usage Note at gigabyte.megabyte (ˈmɛɡəˌbaɪt) n (Units) computing 220 or 1 048 576 bytes. Abbreviation: MB or mbyte See also mega-2meg•a•byte (ˈmɛg əˌbaɪt) n. Computers. 1. 220 (1,048,576) bytes; 1024 kilobytes. 2. 106, or one million (1,000,000), bytes; 1000 kilobytes. Abbr.: MB [1965–70] meg·a·byte (mĕg′ə-bīt′)1. A unit of computer memory or data storage capacity equal to 1,024 kilobytes (220 bytes).2. One million bytes.Usage Usually the prefix kilo- means "one thousand," and the prefix mega- means "one million." But in the calculation of data storage these prefixes have a different meaning. Data storage capacity (measured in bytes) is based on powers of 2 because of the binary nature of bits (1 byte is 8, or 23, bits). Here, the prefix mega- refers to the power of 2 closest to 1,000,000, which is 220, or 1,048,576. Thus, a megabyte is 1,048,576 bytes, although it is also used less technically to refer to a million bytes. Similarly, the prefix kilo- refers either to 1,000 or to 210 (1,024). Measuring the transmission of data is somewhat different from measuring its storage. Since a bit of transmitted data is considered as one signal pulse rather than an either/or unit, it is natural to count transmitted bits using ordinary numbers instead of the binary system. Thus a megabyte of transmitted data usually refers to a million (not 1,048,576) bits. Other prefixes for greater amounts, such as giga- and tera-, follow similar rules for data storage and transmission.ThesaurusNoun | 1. | megabyte - a unit of information equal to 1000 kilobytes or 10^6 (1,000,000) bytesMB, Mcomputer memory unit - a unit for measuring computer memorykilobyte, kB, K - a unit of information equal to 1000 bytesgigabyte, GB, G - a unit of information equal to 1000 megabytes or 10^9 (1,000,000,000) bytes | | 2. | megabyte - a unit of information equal to 1024 kibibytes or 2^20 (1,048,576) bytesmebibyte, MiB, MB, Mcomputer memory unit - a unit for measuring computer memoryKiB, kibibyte, kilobyte, kB, K - a unit of information equal to 1024 bytesGiB, gibibyte, gigabyte, GB, G - a unit of information equal to 1024 mebibytes or 2^30 (1,073,741,824) bytes | Translationsmegabyte
megabyte[′meg·ə‚bīt] (computer science) A unit of information content equal to 1,048,576 (1024 × 1024) bytes. Abbreviated Mbyte. Symbolized M. megabyte (unit)(MB, colloquially "meg") 2^20 = 1,048,576 bytes =1024 kilobytes. 1024 megabytes are one gigabyte.
The text of a six hundred page paperback book would requireabout a megabyte of ASCII storage.
See prefix.megabyteOne million bytes, or more precisely 1,048,576 bytes. Also MB, Mbyte and M-byte. See mega, space/time and never say.megabyte
megabyte A unit of digital size, corresponding to one million (106) bytes (sometimes, 1024 kilobytes).See MB See MBYTEmegabyte Related to megabyte: gigabyte, terabyteSynonyms for megabytenoun a unit of information equal to 1000 kilobytes or 10^6 (1,000,000) bytesSynonymsRelated Words- computer memory unit
- kilobyte
- kB
- K
- gigabyte
- GB
- G
noun a unit of information equal to 1024 kibibytes or 2^20 (1,048,576) bytesSynonymsRelated Words- computer memory unit
- KiB
- kibibyte
- kilobyte
- kB
- K
- GiB
- gibibyte
- gigabyte
- GB
- G
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