Re: Anybody with an oscilloscope as an Apple II display?

[Charlie Springer <RAM@regnirps.com>]

On Tue, 1 Apr 2008 12:52:56 -0700, Michael J. Mahon wrote
(in article <07CdnQbALc4HD2_anZ2dnUVZ_oOnnZ2d@comcast.com>):

> Fun with scopes is probably what led me to interactive graphics
> as my first excursion into interactive computer programs (around
> 1964).  The graphical capabilities of the Apple II were one of
> its strongest attractions to me in 1980.

Micheal, you may not be aware, but Jef Raskin's thesis from 1967 is entitles 
"QuickDraw, A graphical computer interface". I think I have it right.

I remember the first time I used a phototransistor to drive the vertical on a 
scope and the weird stuff I got when I placed it near or against the scope 
display, especially when the trace was set very slow, like a second or more. 
If I had seen it as other than a novelty I might have invented the light pen.

-- Charlie Springer