Why hard disks and Flash memory USB does not show full size on Windows?

How many times have you purchased an external hard drive or USB Flash from a certain category when your tangled him surprised by the amount of memory may fade, move from 500-GB for example to 465, how can this and the significant proportion of memory?

Note that hard drive manufacturers do not trick you into space obtained is in the fact that you bought, how else can you explain all this?

Let us stand first on some of the basics postulates, which have known many of you, which is the secret behind the problem. I'll try to explain it superficially so as not to confuse you: the amount of information stored on a computer or on any means of storage, is measured in a unit called the "Octet" is equivalent to "Byte". This unit is in turn divided into 8bits "." Permission to shorten:

" 1octet=1byte=8bits "

We come now to the complications we find:

" 1Go = 1Gb = 1.000 Mo = 1.000.000 Ko = 1000.000.000 octets "

Where is the problem? The problem is that Windows actually uses other complications (in binary numeral system), let me show you it:

" 1Gio = 1.024Mio = 1024*1024Kio = 1024*1024*1024 octets = 1.073.741.824 Octets "

This is the system of counting used by the Windows but did not give his name, called Go to Gio and so ... This causes confusion for users. And if you don't like math) I know that for many of you (enough;) you divide any storage you want to 1.07374 to find the truth that capacity would show the Windows operating system, and of course the more hard disk space, the more I noticed the difference.

everything with us http://www.everythingwithus.blogspot.com