Chapter 15
COMPUTER
1. What is a computer according to the text?
Answer: A computer is an electronic device that stores information, performs calculations, solves problems, and serves as a friend when you command it.
2. How did the computer get its name?
Answer: The computer got its name from the Greek word “Compute,” which means “to calculate.”
3. What does the word “Compute” mean?
Answer: “Compute” means to calculate.
4. How is a computer different from a calculator?
Answer: A computer is different from a calculator because it can store information, process data, solve problems, and perform many tasks with just a click, while a calculator only performs basic calculations.
5. Give an example of a calculation that a computer can do.
Answer: For example, a computer can calculate 100 × 100 = 10,000 or 25 × 25 = 625 instantly.
6. Can a computer solve problems? How?
Answer: Yes, a computer can solve problems if we feed it the necessary data and give proper commands.
7. Where can we find computers in our daily life?
Answer: Computers are present in schools, offices, banks, shops, hospitals, railway stations, airports, and many other places in society.
8. What is a C.P.U. in a computer?
Answer: C.P.U. stands for Central Processing Unit. It is called the brain of the computer because it does all the processing and decision-making.
9. What is the function of a keyboard?
Answer: A keyboard is a set of keys used to enter letters, numbers, and symbols into the computer.
10. What is a mouse used for?
Answer: A mouse is used to give instructions or commands to the computer by clicking.
11. What does U.P.S. stand for?
Answer: U.P.S. stands for Uninterrupted Power Supply.
12. What is the purpose of a U.P.S.?
Answer: A U.P.S. provides power to the computer without interruption, even if the main power supply goes off.
13. How does a computer work?
Answer: A computer works by taking input from devices like a keyboard, processing the data in the C.P.U., and giving output on the monitor.
14. What is the role of the monitor in a computer?
Answer: The monitor displays the result of the processed data, acting as the output device.
15. What are the three main steps in computer working?
Answer: The three main steps are: Input (listening), Process (thinking), and Output (speaking).
16. What is data input in a computer?
Answer: Data input is giving information or commands to the computer using devices like a keyboard or mouse.
17. What is data processing in a computer?
Answer: Data processing is the activity done by the C.P.U. to make decisions and solve problems.
18. What is data output in a computer?
Answer: Data output is the display of results on the monitor after processing.
19. Can a computer store information?
Answer: Yes, a computer can store information for future use.
20. How do we command a computer?
Answer: We command a computer by clicking the mouse or typing instructions on the keyboard.
21. What is “chatting” on a computer?
Answer: Chatting is informal communication with friends using the computer.
22. What is “mailing” on a computer?
Answer: Mailing is sending messages or letters electronically using the computer.
23. Why is a computer important in society?
Answer: A computer is important because it is used everywhere for education, business, communication, banking, and transportation.
24. Will people be able to live without computers in the future?
Answer: No, according to the text, a few years later, people will not be able to live without computers.
25. Is a computer useful for calculations only?
Answer: No, a computer is useful for storing information, solving problems, chatting, mailing, and much more, not just calculations.
26. How fast can a computer give answers?
Answer: A computer can give answers instantly with just a click.
27. What is the function of clicking the mouse?
Answer: Clicking the mouse gives instructions to the computer to perform tasks.
28. Why is C.P.U. called the brain of the computer?
Answer: Because it controls all operations, makes decisions, and processes information.
29. What happens if we do not feed data to the computer?
Answer: If no data is provided, the computer cannot perform calculations or solve problems.
30. What kind of problems can a computer solve?
Answer: A computer can solve mathematical, educational, business, and communication problems.
31. How is a computer better than a human for calculations?
Answer: A computer is faster, accurate, and never gets tired while doing calculations, unlike humans.
32. What are the main components of a computer mentioned in the text?
Answer: The main components are C.P.U., Keyboard, Mouse, Monitor, and U.P.S.
33. How can we learn to send e-mails using a computer?
Answer: We can learn to send e-mails at a later stage when trained or guided.
34. What is the importance of storing information in a computer?
Answer: Storing information helps us use it later without repeating the work.
35. How does a computer serve as a friend?
Answer: It helps solve problems, perform calculations, chat, and mail, making tasks easier for us.
36. Can a computer work without electricity?
Answer: No, but a U.P.S. helps it work temporarily even if the main electricity goes off.
37. Why do we call a computer an electronic device?
Answer: Because it works with electricity and electronic components.
38. What should we know before using a computer effectively?
Answer: We should know about its components, how to give input, and how it processes and gives output.
39. How is clicking different from typing?
Answer: Clicking is giving a command using the mouse, while typing is entering information using the keyboard.
40. Why do you think the lesson says computers are everywhere in society?
Answer: Because computers are used in schools, banks, hospitals, offices, shops, airports, and many other places, making them essential in daily life.
Answer by Mrinmoee
