Not all of Window-Eyes is 64-bit. Most programs have both 32 and 64 bit
code. Also, the same 7.5.1 CD will install on both a 32 and 64 bit system.
Many thanks.
On 6/22/2011 12:50 AM, Robert wrote:
I wondered about that. When I was running windows 7 64bit,, window-eyes
installed under program files x86 folder. Indicating that it's a 32 bit
app. What's up with that?
----- Original Message ----- From: "Cory Martin"
<[email protected]>
To: <[email protected]>
Sent: Tuesday, June 21, 2011 9:29 PM
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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