What is a light pen? January 22, 2021 / By Preparation Point / Top 20 MCQs Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedInA. A Mechanical Input device B. Optical input device C. Electronic input device D. Optical output device Share this:TwitterFacebookMoreTelegramWhatsAppLike this:Like Loading... Related Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedIn