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Re: Lubuntu and Accessibility


On Tue, 24 May 2011 09:14:07 -0700
Jonathan Marsden <jmarsden@xxxxxxxxxxx> wrote:

> On 05/24/2011 01:17 AM, Yorvyk wrote:
> > A 700 MHz PIII Celeron with 256 MiB of PC100 RAM and a 100 MHz drive 
> > is quite usable.  A 200 MHZ PIII Celeron and 128 MiB of 66MHz RAM 
> > with a 33 MHz drive is dog slow.  If you add a screen reader into
> > the mix I think the later set-up would become unusable.
> I'm now confused.
> (A) I am not used to seeing drive (presumably hard disk drive)
> performance being measured in Mhz -- what *is* this?
> The common ways to gauge hard drive performance that I know of are:
>  * sustained data transfer rate (in MBytes/sec)
>  * sustained I/O operations per second (IOPS/sec)
> Lower level (and IMO less useful) measures include average seek time,
> and rotational latency... those are measured in milliseconds, not MHz.
> Conventional hard drives are (generally speaking) never bottlenecked by
> their theoretical maximum interface data transfer speed, so this is not
> a useful drive performance metric (but *is* sometimes measured in MHz...
> so maybe that is what you are using?).
No idea why I wrote MHz for the drive spec and not MB/s.

> (B) This message seem to imply that "accessibility" means "screen
> reader", but there is no specification saying that which Phill has
> pointed us to yet.
> I suggest that blindness or lack of visual acuity are not the only
> things requiring accessibility accommodation in an OS.  They *might* be
> the #1 priority for accessibility improvements to Lubuntu -- but without
> a clear specification (blueprint), we do not know this!
> Jonathan
I was just using the screen reader as an example.  

Steve Cook (Yorvyk)