CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
205
You visited us 205 times! Enjoying our articles? Unlock Full Access!
Question

A pen shaped device which can sense light, and is used to point at spots on a video screen is ____________.

A
Mouse
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Light pen
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
Joystick
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Plotter
No worries! We‘ve got your back. Try BYJU‘S free classes today!
E
None of the above
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B Light pen

A Light pen shaped device which can sense light, and is used to point at spots on a video screen.

A light pen is a computer input device in the form of a light-sensitive wand used in conjunction with a computer's CRT display. It allows the user to point to displayed objects or draw on the screen in a similar way to a touchscreen but with greater positional accuracy. A light pen can work with any CRT-based display, but its ability to be used with LCDs was unclear.

A pointing device is an input interface that allows a user to input spatial data to a computer. CAD systems and graphical user interfaces (GUI) allow the user to control and provide data to the computer using physical gestures by moving a hand-held mouse or similar device across the surface of the physical desktop and activating switches on the mouse. Movements of the pointing device are echoed on the screen by movements of the pointer (or cursor) and other visual changes.


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Recap: Wave Introduction
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon