Name of the College : Noorul Islam College of Engineering
University : Anna University
Degree : MCA
Department : Computer Applications
Subject Code/Name : MC 1704 – Computer Graphics & Multimedia
Document Type : Question Bank
Website : niceindia.com
Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/niceindia.com/3085-MC1704_Computer_Graphics_and_Multimedia_System.pdf
Computer Graphics & Multimedia Question Paper
1. What is scan conversion? :
A major task of the display processor is digitizing a picture definition given in an application program into a set of pixel-intensity values for storage in the frame buffer. This digitization process is called scan conversion.
Related : Noorul Islam College of Engineering MC1628 TCP/IP Protocol Suite MCA Question Bank : www.pdfquestion.in/3084.html
2. Write the properties of video display devices? :
Properties of video display devices are persistence, resolution, and aspect ratio.
3. What is rasterization? :
The process of determining the appropriate pixels for representing picture or graphics object is known as rasterization.
4. Define Computer graphics :
Computer graphics remains one of the most existing and rapidly growing computer fields. Computer graphics may be defined as a pictorial representation or graphical representation of objects in a computer.
5. Name any four input devices :
Four input devices are keyboard, mouse, image scanners, and trackball.
6. Write the two techniques for producing color displays with a CRT? :
Beam penetration method, shadow mask method
7. What is vertical retrace of the electron beam? :
In raster scan display, at the end of one frame, the electron beam returns to the left top corner of the screen to start the next frame, is called vertical retrace of the electron beam.
8. Short notes on video controller? :
Video controller is used to control the operation of the display device. A fixed area of the system is reserved for the frame buffer, and the video controller is given direct access to the frame buffer memory.
9. What is bitmap? :
Some system has only one bit per pixel; the frame buffer is often referred to as bitmap.
10. Differentiate plasma panel display and thin film electro luminescent display? :
In plasma panel display, the region between two glass plates is filled with neon gas. In thin film electro luminescent display, the region between two glasses plates are filled with phosphor, such as zinc sulphide doped with manganese.
11. What is resolution? :
The maximum number of points that can be displayed without overlap on a CRT is referred to as the resolution.
12. What is horizontal retrace of the electron beam? :
In raster scan display, the electron beam return to the left of the screen after refreshing each scan line, is called horizontal retrace of the electron beam.
13. What is filament? :
In the CRT, heat is applied to the cathode by directing a current through a coil of wire, is called filament.
14. What is pixmap? :
Some system has multiple bits per pixel, the frame buffer is often referred to as pixmap.
15. Write the types of clipping? :
Point clipping, line clipping, area clipping, text clipping and curve clipping.
16. What is meant by scan code? :
When a key is pressed on the keyboard, the keyboard controller places a code carry to the key pressed into a part of the memory called as the keyboard buffer. This code is called as the scan code.
17. List out the merits and demerits of Penetration techniques? :
The merits and demerits of the Penetration techniques are as follows
** It is an inexpensive technique
** It has only four colors
** The quality of the picture is not good when it is compared to other techniques
** It can display color scans in monitors
** Poor limitation etc.
18. List out the merits and demerits of DVST? :
The merits and demerits of direct view storage tubes [DVST] are as follows
** It has a flat screen
** Refreshing of screen is not required
** Selective or part erasing of screen is not possible
** It has poor contrast
Performance is inferior to the refresh CRT.
19. What do you mean by emissive and non-emissive displays? :
The emissive display converts electrical energy into light energy. The plasma panels, thin film electro-luminescent displays are the examples.
The Non-emissive are optical effects to convert the sunlight or light from any other source to graphic form. Liquid crystal display is an example.
20. List out the merits and demerits of Plasma panel display? :
Merits :
** Refreshing is not required
** Produce a very steady image free of Flicker
** Less bulky than a CRT.
Demerits :
** Poor resolution of up to 60 d.p.i
** It requires complex addressing and wiring
** It is costlier than CRT.