17. What is the work of a modem?

18. When should I use GIF format for my image ?

19. When should I use JPEG format for my image ?

20. How do I produce a nonrectangular image?
13. What is meant by computer graphics?

14. How many colors are possible and how to control colors?

15. What is ASCII character?

16. What is the difference between analog and digital?
1.What is computer programming?

2. What is a byte?

3. What is a computer file?

4. How filenames are chosen?

5. What is an application or application program?

6. Is computer memory different from disc space?

7. What is CPU and its speed?

8. What is meant by windows?
9. Why does internet slow down?

10. What is meant by compression or decompression?

11. How do sound, music, voice become a computer file?

12. Why a right button on mouse is required?
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21. What an image changes few original colors. if GIF
     compression is lossless?

22. Why some JPEG images have distortions ?

23. How to make an image fade for using in background?
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