y_p_w <y_p_w@[EMAIL PROTECTED]
> wrote:
>Jürgen Exner wrote:
>> aniramca@[EMAIL PROTECTED]
wrote:
>> [SD cards]
>> >1. Why do they multiply in the order of
>> >1,2,4,8,16,32, etc. Why not in nice number like 5, 10, 20, 30, 40, 50
>> >GB, etc (metric)?
>>
>> Because the native language of the computers we have today is binary,
not
>> decimal.
>
>Hard drives come in non-binary sizes, and sometimes oddball ones at
>that.
Apples and oranges. There is quite some difference between the internal
workings of a HD and a memory chip. For a harddrive the numbers of heads,
tracks, sectors, and disks introduce factors, that are determined by
physical characteristics, not logical considerations.
On a memory chip to supply 10x still requries 16x of items of whatever you
are looking at. So why waste waste the remaining 6 items?
> In fact, published capacity is in decimal megabytes, and users
>complain that their systems (which state binary megabytes) show less.
>My 40GB HD says it has a 34.9GB capacity.
Old news.
jue
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