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64 Mb is how many Gigabytes?

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Crunch' Posted messages 25 Registration date   Status Membre Last intervention   -  
Neliel Posted messages 7012 Status Contributeur -
Hello,

I have an Mp3 of 64Mb, how many Gigabytes is that, please? :)
Best regards,

Crunch' :D

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4 réponses

Réponse 1 / 4
justin23111 Posted messages 128 Status Membre 8
 
0.064GB must be from the time of Methuselah.
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Neliel Posted messages 7012 Status Contributeur 1 702
 
False! 0.0625... in computing, it's powers of 2, not powers of 10, so you shouldn't divide by 1000 but by 1024.
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justin23111 Posted messages 128 Status Membre 8
 
It doesn't take a song to miss you.
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Neliel Posted messages 7012 Status Contributeur 1 702
 
Sure! ^^ It's just the principle... but for larger values, the difference is greater.
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Crunch' Posted messages 25 Registration date   Status Membre Last intervention   2
 
But there's a problem, I already have more than 60 songs ^o)
Is that normal? Because that's exceeding 64 MB you know.
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Réponse 2 / 4
Neliel Posted messages 7012 Status Contributeur 1 702
 
Hello,

Not even a Giga...
To convert Mega to Giga, you need to divide by 1024 (in computing).
--
"Trotti Trotta, Mr. P, there are angels who want a kiss..."
"Even Mr. P's toys need toys"
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Réponse 3 / 4
lepseudokejemetparcekejesaipakoi Posted messages 4865 Registration date   Status Contributeur Last intervention   1 248
 
To put it simply.
A bit is a 0 or a 1
A byte is 8 bits: 0000 1111 (for example)
A kB (kilobyte) is a thousand bytes
A MB (megabyte) is 1000 kB
A GB (gigabyte) is 1000 MB
and finally a TB (terabyte) is 1000 GB.
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Neliel Posted messages 7012 Status Contributeur 1 702
 
Once again, no!

A byte is indeed 8 bits. 1 bit can only take two values (0 or 1).
But, 1 KB is not equal to 1,000 bytes. 1 KB = 1,024 bytes
1 MB = 1,024 KB = 1,048,576 bytes
1 GB = 1,024 MB = 1,048,576 KB = 1,073,741,824 bytes

Don't forget that in computing, it's binary, it's base 2 and not base 10. So the calculations are done in powers of 2 and not in powers of 10.
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vaanbasch Posted messages 793 Registration date   Status Membre Last intervention   666
 
Hello,
not at all 1MB = 1000kB.
Neliel, you are confusing MB (Megabyte) and MiB (Mebibyte).
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Neliel Posted messages 7012 Status Contributeur 1 702
 
Yes and no… in fact, Mebioctet is a fictional unit created because calculating in powers of 2 violates the standard of other measurement units using kilo, mega…

But the standard clearly states that in terms of computing, calculations are made only in powers of 2 because it is impossible to achieve 1,000 KB in capacity, for example, due to the binary base. You will never find a USB stick of 1,000 MB on the market; a 1 GB stick corresponds to 1,024 MB.
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Réponse 4 / 4
vaanbasch Posted messages 793 Registration date   Status Membre Last intervention   666
 
https://fr.wikipedia.org/wiki/Octet
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Neliel Posted messages 7012 Status Contributeur 1 702
 
This same article states that the Mebi units and the like were created because calculating in powers of 2 violates the standard of units of measurement. However, calculating in powers of 10 means nothing at all in computing... computers only understand binary, so capacities should not be measured in powers of 10.
The Mebi units and others are therefore erroneous and make no sense,
" They were created by people who understand nothing about how computing and electronics work. " -> Quote from my computer science teacher
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