Computer Graphics · Unit 2
Display Systems and Architecture
Exam-focused notes for Display Systems and Architecture (Computer Graphics, BIT304): what the TU syllabus asks and how it has actually been tested, with 5 solved past questions from this unit.
What this unit covers
- Raster scan display systems
- Random scan display systems
- Vector graphics display architecture
- Raster graphics display architecture
- Screen refresh and pixel scanning
- Advantages and disadvantages of display types
Raster scan display systems
Differentiate between raster scan and random scan display systems. [5]
Aspect Raster Scan Random Scan --------------------------------- Scanning Method Electron beam sweeps across the screen in a systematic pattern (left to right, top to bottom) Electron beam moves directly to specific points on the screen in any order Drawing...
Full solved answer →Random scan display systems
Explain architecture of random scan display systems with suitable diagram. [5]
A random scan display (also called vector display or stroke-writing display) is a display system that draws images by directing an electron beam to specific points on the screen in any arbitrary order, rather than scanning the entire screen line by line. - ...
Full solved answer →Vector graphics display architecture
Draw the block diagram of vector and raster graphics display architecture and write the advantages and disadvantage of both display architecture.[10]
--- Advantages: - Realistic images: Can display photorealistic images with smooth color gradations - Efficient rendering: Fast display using frame buffer and hardware acceleration - Natural for photography: Well-suited for digitized images and photographs -...
Full solved answer →Screen refresh and pixel scanning
How much time is spent scanning across each row of pixels during screen refresh on a raster system with resolution 1024*768 and refresh rate of 60 frames per second? [5]
- Resolution: $1024 \times 768$ pixels (horizontal × vertical) - Refresh rate: $60$ frames per second Number of scan lines (rows) = vertical resolution = $768$ Time per frame (full screen refresh): $$ T{frame} = \frac{1}{\text{refresh rate}} = \frac{1}{60} ...
Full solved answer →Advantages and disadvantages of display types
Differentiate between vector and raster scan systems. [5]
Definition: A vector scan system (also called random scan or stroke writing display) draws images by directing the electron beam directly to the points or lines that need to be displayed. Key Characteristics: - The electron beam moves from point to point, t...
Full solved answer →Make Unit 2 stick
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