Display devices
Short Questions.
1.
Define pel / pixel
2.
Are printers raster
scan systems or random scan systems
3.
Are pen plotters raster
scan systems or random scan systems
4.
How many vertical
retrace are there in a raster system with a refresh rate of 60 Hz
5.
What is interlacing
6.
What is Progressive
Scan
7.
Instead of phosphor
what is used in DVST
8.
What are vector
displays
9.
What is refresh display
file
10. Distinguish
between shadow mask method & beam penetration method
11. What
are FPDs
12. Distinguish
emissive and non-emissive display systems
13. What
is the role of negatively charged electrodes in CRT
14. What
is the role of positively charged anodes in CRT
15. What
is the role of Shadow Mask or Aperture Grill in CRT
16. What
are phosphor triads
17. Differentiate
between Raster Scan & Random Scan Systems.
18. Which
four colors a random scan system can produce
19. “More
the resolution, Less is the refresh rate”, Comment.
20. What
is Horizontal retrace
21. What
is vertical retrace
22. How
is the image drawn on DVST, erased
23. DVSTs
can produce only one color.
24. How
is the vacuum tube used to store image in a DVST
25. What
is Refresh rate
26. What
is resolution
27. What
is aspect ratio
28. What
is the aspect ratio of human eyes
29. What
is dot pitch
30. What
is persistence
31. What
is contrast ratio
32. At
what voltage the gas used in plasma displays is ionized into PLASMA State
33. Which
Gases are used in plasma displays
34. What
is the sustain voltage in Plasma Displays
35. How
many sub pixels are there for each pixel in plasma displays
36. “There
is one address for all the sub pixels of a single pixel in plasma displays”.
True or False.
37. What
excites the phosphors in a plasma display
38. Why
Plasma Displays do not work at very high altitude
39. What
is the role of Indium Tin Oxide (ITO) in LCDs.
40. Differences
between TN and STN which are used in LCDs
41. “When
a pixel is turned on the liquid crystals are arranged in helical shape”. True
or False
42. LCDs
do not produce any light of their own. Then how do they work?
43. ‘LCD,
Plasma or CRT’, which of these uses the least amount of electricity.
44. What
are passive displays
45.
What are active displays / TFTs
46. Discuss
Advantages & Disadvantages of LCDs, Plasma, CRT.
47. Why
LCDs cannot be used with Light Pens.
48. Is
it possible that a display device displays a picture even after the current is
switched off.
49. How
do you flush a DVST.
50. What
is polarized light
Long Questions.
1.
Explain the working of
Monochrome CRT in detail. Also Draw a neat Diagram
2.
Explain the working of
Coloured CRT in detail. Also Draw a neat Diagram
3.
What are the different
kinds of CRT based on Refreshing Technology
4.
Explain the working of
Random scan systems and DVSTs
5.
Discuss Working of
Plasma Panel Displays
6.
Discuss Working of
Liquid Crystal Displays
7.
Comparatively analyze
CRT, Plasma and LCD Displays
HardCopy Devices
Short Questions.
1. Differentiate
Hardcopy and Softcopy Output Devices
2. Differentiate
Impact & Nonimpact Printers
3. List
Different Impact Printers
4. List
Different Non-Impact Printers
5. Which
printers can be used to take carbon copies of same printout
6. Can
a daisy wheel printer be used to print different fonts of characters
7. What
are piezoelectric printers
8. What
are bubble jet printers
9. What
is the use of guard droplets
10. What
colors are used in cartridge of colored inkjet printers
11. Which
printer uses solid ink
12. What
is the use of laser beam in a laser printer
13. What
is the use of fuser in a laser printer
14. Printers
are raster scan systems or random scan systems
15. Plotters
are raster scan or random scan in nature
Long Questions.
1.
Explain the working of
Dot-Matrix Printers
2.
Explain the working of
Daisy wheel Printers
3.
How
the Drum printers work
4.
Discuss
working of Inkjet printers
5.
Discuss
working of Bubble jet printers
6.
Discuss
working of Peizo-electric Inkjet printers
7.
How
do the Laser Printers work
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