light pen

• Dispositivo de entrada manual sensível à luz usado com monitores de computador, que permite ao usuário apontar diretamente para objetos na tela. Foi comum nas décadas de 1960 a 1980, mas hoje está amplamente obsoleto.

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.

   Caneta óptica

   • 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.