What is a light pen?

  • 0 replies
  • 1849 views
*

Offline mechanic

  • Engineer
  • *****
  • 3384
  • Gender: Male
  • Engineer
    • View Profile
    • Engineering Forum
What is a light pen?
« on: July 03, 2015, 08:46:42 PM »
What is a light pen?

Options are:

a. A Mechanical Input device
b. Optical input device
c. Electronic input device
d. Optical output device

Correct answer is (b)

b. Optical input device