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.

Who needs a 1920×1080 OLED display when you can have an 8×8 matrix of LED goodness? That’s the question [Kathy] asked when she built this LED matrix light pen project. It looks simple enough – a ...

There's something special about 80's technology. So much of it has the feeling of a first draft, of dipping one's toe into a deep pool while trying to figure out the best way to use technology. So it ...

Microsoft's current focus on touch-display interaction - as evidenced by its pushing of Metro UI in Windows 8 and its Surface interactive tables and Windows-based tablet product lines - is clear, but ...

One city skyline is dazzling enough. Now imagine 15,000 of them. Researchers have done just that -- drawing 15,000 identical skylines with tiny beams of light using an innovative nanofabrication ...

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 ...

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 ...