[math-fun] How big is a Gibibyte?
We engineers have long suffered from the confusion resulting from the regretable fact that powers of two are not also powers of ten. The IEEE has a draft standard "Standard Prefixes for Binary Multiples" http://www.ieee802.org/secmail/pdf00106.pdf that would clear up the nomenclature surrounding multiplication by 2^(10n). Unfortunately, I can't quite get myself to utter "kibibyte" without thinking of dog snacks. Here's an excerpt from the Draft standard, in the "Applications" section: * * * * Q: The formatted capacity of my hard drive seems smaller than what was ordered. Why? A: Your operating system assumes that 1 MB equals 1 048 576 bytes. Drive manufacturers consider 1 MB as equal to 1 000 000 bytes. Thus if the drive is advertised as 6.4 gigabytes (6 400 000 000 bytes) the operating system sees it as approximately 6.1 GB. [(6 400 000 000)/(1 048 576 000) = 6.1035...]. Thane Plambeck 650 321 4884 office 650 323 4928 fax http://www.qxmail.com/home.htm
----- Original Message ----- From: "Thane Plambeck" <thane@best.com> To: <math-fun@mailman.xmission.com> Sent: Thursday, January 16, 2003 11:07 AM Subject: [math-fun] How big is a Gibibyte?
We engineers have long suffered from the confusion resulting from the regretable fact that powers of two are not also powers of ten.
GRAY: This can easily be handled by simply redefining "two" slightly. Most people count on their fingers and fingers aren't that accurate anyway. They're not quite digital. First grade teacher: How many X's are there here? X X Johnny: Obviously 10^(3/10), Mrs. Jones. Teacher: Very good, Johnny. You get a gold star.
participants (2)
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Steve Gray -
Thane Plambeck