Keywords computer graphics, Bell Telephone Laboratories, Graphic 1, circuit design, electronic light pen, programming, visual representation, communication satellites, sound waves, artistic ...

To interact with graphics, Sketchpad used a recently invented input device called a light pen, which was a stylus tethered to a computer with a wire. By using a light sensor in the tip, the pen ...

First Light Pen This handmade prototype of a "light gun" in 1952 was part of the Whirlwind Project at MIT. Subsequent devices were used to hone in on suspicious blips on the CRT in the U.S. air ...

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.

Light pens were originally invented for use with vector displays, long before bitmapped raster displays were feasible. On a raster display, the light pen triggers on the portion of the “display ...