A light-sensitive stylus wired to a video terminal used to draw pictures or select menu options. The user brings the pen to the desired point on screen and presses the pen button to make contact.

Sometimes the simplest of projects end up revealing the most interesting of things, as for example is the case with [Ryo Mukai]’s light pen for the Vectrex console. It’s an extremely simple device ...

If you worked with computers back in the 1970s, there’s a good chance you used a light pen at some point: a simple input device that you’d point at the CRT screen to highlight text, choose menu ...

The film showcases the innovative work of engineers at Bell Telephone Laboratories as they explore computer graphics and its applications in designing electronic circuits. Using a device called ...

A tiny 3D-printing pen called Creopop will enable you to create prototypes on the go. Printing with non-toxic resin ink, this device will be useful for engineers, designers, artists, and others who ...

Physicians and repair engineers often use small light pens for visual examination Spurposes. Rugged and expensive as these pens may be, their weak point is the bulb, which is a ‘serviceable’ part. In ...