A similar device built with a discrete LED matrix is a good illustration of the light pen’s working principle. Posted in classic hacks, computer hacks Tagged commodore, Light Pen, usb hid.

A great success then, although there’s one catch: light pens only work on CRT displays, so you’ll need to drag one of those big glass beasts out of storage if you want to try this yourself.

Bullish (Video) Bell Labs: Early Computer Graphics & Light Pen Technology. Posted: February 22, 2025 | Last updated: March 8, 2025. The film showcases the innovative work of engineers at Bell ...

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 ...

Microsoft is looking to bring back the light pen as an accessory for Windows 8. ... although later models work with liquid-crystal displays too ...