1. Mention any five benefits of computer.
Computer helps us in many ways:
- A lot of tasks can be automated using computers saving a lot of our precious time and energy.
- Humans tend to make mistakes, but computers have high accuracy.
- It provides us timely information.
- We can store huge amount of data in computers and that too for a far longer time than ever before.
- It effectively cuts down costs of human tasks by online processing.
2. Write any three features of
a) QBasic
(i) It provides GUI (Graphical user Interface) for writing programs
(ii) The syntax of the statements is very simple.
(iii) It provides error debugging facility in a program.
b) Java
(i) It provides platform independence leading to portability.
(ii) It is capable of handling run time errors.
(iii) It is dynamic and extensible because of OOPS.
3. Write the different extensions of video files.
Video files have extensions like mp4, mov, wmv, avi, etc.
4. What are the uses of wild card characters in searching?
If we are searching a file but don't know its exact name, we can search the file using wildcard characters. We have the following wildcard characters:
- ? - this represents a single character in a file name.
- * - this represents all the letters present in the primary or secondary name of a file.
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