Discuss the functioning of a light pen
Answers
Answer:
a light pen is a light sensitive input device shaped like pen used to draw on the computer screen or to make menu selection
Explanation:
this answer is according to IT book of class 9
Answer:
Functioning of a light pen
Explanation:
A light pen is hardware that acts as an input device for the computer. Which is used to select the menu or image on the screen of the computer or to do any other work. Inside it is a photocell and an optical system placed in a tube. When the tip of this pen is placed on the screen of the computer. So the button of this pen is pressed. Which emits photocell sensing from inside it, due to which a signal is sent from the place where the pen is touched on the screen, which goes to the CPU (central processing unit) of the computer. We also call this pen an electronic pen. It always looks like a pen in appearance. We can also use this pen in place of a mouse.
A light pen is used as a receptor while working on the computer. On pressing the button on it, the computer display comes on and works. It creates pixels on the screen. The electronic device embedded in it produces an image from the light on the screen.
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