Video Display devices : Computer Graphics

In this video, you find the answer to the following
Q1.What is VDU?
Q2.what are different devices for visual display?
Q3. Wat is CRT? Discuss its working with a suitable diagram?
Q4. Write short on
4.a)Persistence
4.b)Resolution
4.c)Aspect Ratio

Vidoe Display devicesComputer GraphicsHPU BCA 6th sem