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In some fields of computing, mega may sometimes denote 1 048 576 (2 20) information units, for example, a megabyte, a megaword, but denotes 1 000 000 (10 6) units of other quantities, for example, transfer rates: 1 megabit/s = 1 000 000 bit/s. In the case of 3½-inch floppy disks, sizes were given in megabytes of 1000KB or 1 024 000 bytes. [2]
Prefix Symbol Factor Power tera T 1 000 000 000 000: 10 12: giga G 1 000 000 000: 10 9: mega M 1 000 000: 10 6: kilo k 1 000: 10 3: hecto h 100 10 2: deca da 10 10 1 (none) (none) 1 10 0: deci d 0.1 10 −1 ...
Standards bodies have deprecated this binary usage of the mega- prefix in favor of a new set of binary prefixes, [2] by means of which the quantity 2 20 B is named mebibyte (symbol MiB). Definitions The unit megabyte is commonly used for 1000 2 (one million) bytes or 1024 2 bytes.
A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic.Each prefix has a unique symbol that is prepended to any unit symbol.
The factor is intended to make reading comprehension easier than a lengthy series of zeros. For example, 1.0 × 10 9 expresses one billion—1 followed by nine zeros. The reciprocal, one billionth, is 1.0 × 10 −9.
Most English variants use the short scale today, but the long scale remains dominant in many non-English-speaking areas, including continental Europe and Spanish-speaking countries in Latin America. These naming procedures are based on taking the number n occurring in 10 3 n +3 (short scale) or 10 6 n (long scale) and concatenating Latin roots ...
mega million million 10 9: giga billion or milliard milliard 10 12: tera trillion ... one too many zeros in the 804300 portion of the fully written out example: ...
In English and many other languages, they are used to coin numerous series of words. For example: simplex, duplex (communication in only 1 direction at a time, in 2 directions simultaneously) unicycle, bicycle, tricycle (vehicle with 1 wheel, 2 wheels, 3 wheels) dyad, triad, tetrad (2 parts, 3 parts, 4 parts)