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Always wanted to use a light pen but didn’t have a computer. When I finally got a C128, (BASIC 7 even included the PEN command!) I couldn’t really afford the commercial light pen versions.
Using a device called Graphic 1, they can draw and manipulate circuit designs directly on a cathode ray tube with an electronic light pen, allowing for rapid prototyping and testing of ideas.
The U.S. Patent and Trademark Office on Tuesday reissued Apple a patent for a mobile computer encased in a pen, adding cellular and GPS capabilities to the invention first filed for ...