Measurements - Research Article from Macmillan Science Library: Computer Sciences

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Data Unit Abbreviation Equivalent (Data Storage) Power of Ten
Byte B 8 bits 1 byte
Kilobyte K, KB 210 = 1,024 bytes 1,000 (one thousand) bytes
Megabyte M, MB 220 = 1,048,576 bytes 1,000,000 (one million) bytes
Gigabyte GB 230 = 1,073,741,824 bytes 1,000,000,000 (one billion) bytes
Terabyte TB 240 = 1,099,511,627,776 bytes 1,000,000,000,000 (one trillion) bytes
Petabyte PB 250 = 1,125,899,906,842,624 bytes 1,000,000,000,000,000 (one quadrillion) bytes
Time Abbreviation Equivalent Additional Information
femtosecond fs, fsec 10-15 seconds 1 quadrillionth of a second
picosecond ps, psec 10-12 seconds 1 trillionth of a second
nanosecond ns, nsec 10-9 seconds 1 billionth of a second
microsecond μs, μsec 10-6 seconds 1 millionth of a second
millisecond ms, msec 10-3 seconds 1 thousandth of a second
second s, sec 1/60 of a minute; 1/3,600 of an hour 1 sixtieth of a minute; 1 thirty-six hundredths of an hour
minute m, min 60 seconds; 1/60 of an hour 1 sixtieth of an hour
hour h, hr 60 minutes; 3,600 seconds  
day d 24 hours; 1,440 minutes; 86,400 seconds  
year y, yr 365 days; 8,760 hours ...

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This section contains 956 words
(approx. 4 pages at 300 words per page)
Buy the Measurements Encyclopedia Article
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Macmillan Science Library: Computer Sciences
Measurements from Macmillan Science Library: Computer Sciences. Copyright © 2001-2006 by Macmillan Reference USA, an imprint of the Gale Group. All rights reserved.