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On Feb 28, 2008, at 8:40 PM, [log in to unmask] wrote:

>> [mailto:[log in to unmask]] On Behalf Of Mark J. Reed
>
>> Ans who else remembers light pens, the poor man's touch screen? :)
>
> Had one.

I had one too, for my Commodore 128. I think it cost $70 in the late  
'80s. I loved it, especially to draw with, and have often wondered  
why they didn't really catch on, but I guess it might be (as  
Wikipedia says) the ergonomic problems involved.