Wow that's interesting, ok then, thanks.
Cory
On 22/06/2011 12:52 PM, John Farley wrote:
Hello Cori,
Included in your note you have:
"but typically you should push to use 64-bit applications on a 64-bit system
instead of 32-bit ones."
I looked into this with Office 2010 in mind.
The recommendation from Microsoft is that you should only install the 64 bit
version if you are doing very large computational tasks, such as very large
spread sheets, for which it is optimised.
The everyday user will find the 32 bit version more efficient.
I hope this helps.
Regards, John
John Farley
Personal Contact Work contact
E-Mail: [email protected] [email protected]
-----Original Message-----
From: Cory Martin [mailto:[email protected]]
Sent: Wednesday, June 22, 2011 3:30 AM
To: [email protected]
Subject: Re: window eyes 7.5 and 64 bit operating system
Hi, what is 64-bit? I'll do my best to explain this. Computers
process information at a certain speed, think of yourself watching traffic
go down a street. The first computers were no more than a rutted dirt road,
the travel was slow and you could only go one way at a time. Then they
introduced 16-bit which doubled the width of the road increasing the speed.
32-bit systems doubled this road again so now you have even more space for
traffic, and 64-bit is again increasing this width double-wide. So now for
more realistic information. MS-DOS was 16-bit, Windows 95 pushed this in to
32-bit with the trend continuing trhough Windows 98, NT, ME, 2000 and XP.
By the late end of XP's development they were trying to implement it under
64-bit, especially since Apple has had 64-bit support for ages. There are
builds of Windows XP 64-bit, but the last time I tried running one, although
it installed fine and my system seemed to work with it, at the time the
other screen reader I was using would not install it's video intercept
driver. We won't get in to the name of that one but I'm sure you can all
guess which one it was. Maybe Window Eyes would fair better with XP 64-bit,
I might try it and see. Nevertheless, with Vista and 7, they started
releasing two versions, the 32-bit and 64-bit version. The rule of thumb
is, if your system supports 64-bit in all its components out of the box, you
can use it. The advantages to 64-bit over 32-bit is 32-bit has a limit to
how much RAM the system can recognize, 3GB though I've also heard 3.5GB will
be accepted, but nothing more. I see new motherboards shipping on Tiger
Direct that support up to 24GB of RAM under 64-bit. But if you put 24 gigs
of RAM in to a 32-bit system, it'll only see the first 3 or 3.5 gigs of it.
So that's one advantage.
The other is that your processor can push data along that highway twice as
fast as it could on a 32-bit system, so naturally the system is faster.
Windows includes backward compatibility for legacy 32-bit applications so
they will work on a 64-bit system, but typically you should push to use
64-bit applications on a 64-bit system instead of 32-bit ones. You will not
see 32-bit systems shipping new out of hte box anymore very much if at all
because manufacturers don't see the need to build small roads anymore when
they can make them twice as wide. The only exception here is netbooks and
smaller systems which cannot support a 64-bit processor, though that will
likely very soon change. Either way, 32-bit is a thing of the past. A
screen reader needs to be 64-bit because of the intercept driver and I would
guess because of the complexity of such a program needing full access to the
OS.
Correct me if I'm wrong, but as far as I know the same download or disk
for Window Eyes will install either a 32-bit or 64-bit version of the screen
reader, depending on what type of opperating system it detects. As a result
you do not need a separate disk for 64-bit.
HTH,
Cory
On 21/06/2011 7:48 PM, Louis wrote:
Hello folks. I just got a computer that is running the 64 bit version
of Windows 7. I have two questions. First what is the diffrence
between 32 bit and 64 bit? Second question, do I need a separate
Window Eyes instalation CD for 64 bit? Thanks for your help.
Louis
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