On Dec 14, 2007, at 11:58 AM, Brad Rogers wrote:
On Fri, 14 Dec 2007 12:49:13 -0500 "Douglas A. Tutty" <dtutty@porchlight.ca> wrote: Hello Douglas,opto-isolator for it. So I used the TV screen. I covered the top half with photo-sensors. Had my program put black blobs on the appropriate spot on the screen and that did whatever to theThat has got to be *the* most bizarre opto-isolation I've come across.
Didn't Microsoft sell a data wristwatch for a while that was programmed by rapidly flashing the screen? I remember thinking at the time that it was rather short-sighted to come out with a product that required the user to have a CRT monitor.