What is the disadvantage of the light pen?
A. It’s shape
B. They cannot detect positions
C. Accurate reading
D. Cannot detect positions within black areas
Answer:A
What is the disadvantage of the light pen?
A. It’s shape B. They cannot detect positions C. Accurate reading D. Cannot detect positions within black areas
Explanation: light pen requires special implementations and sometimes gives false reading due to background lighting in a room.