32 GB SD card is coming!

On Jan 14, 8:02*pm, Jürgen Exner wrote:
wrote:
Jürgen Exner wrote:
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?

I'm not sure exactly what you're getting at.

It would still be possible to make a non base 2 number of rows or
columns and get the whole thing to work. it's generally a lot easier
to do the math (addressing) since most arithmetic is done in base 2.

In certain embedded memory applications, you might want to squeeze
some sort of oddball array size in there. I've done that at my jobs.
The layout tools can accomplish pretty much anything. Sometimes
unique considerations mean dropping in three base 2 memory arrays.