light pen

• Stylet photosensible utilisé avec un écran d'ordinateur pour désigner directement des objets à l'écran. Il a été courant dans les années 1960 à 1980, mais est aujourd'hui largement obsolète.

A light-sensitive handheld input device used with a computer display, allowing the user to point directly at objects on the screen. It was commonly used in the 1960s–1980s but is now largely obsolete.

1. Computer input deviceC1formal

   A light-sensitive pointing device used to select or draw on a computer screen by pointing directly at the display.

   souris optique à écran

   • The designer used a light pen to sketch directly on the monitor.
   • Early computer systems often relied on a light pen for user interaction.
   • The light pen allowed engineers to select menu options by touching the screen.