IT Planet 3 || Lesson 1 : About Computer

Exercises 

A. Tick [✓] the correct answer.

1. A computer is a

a. Software [ ] b. Machine [✓] c. Book [ ]

2. Windows is an example of

a. Software [✓] b. Hardware [ ]

c. Both a. and b. [ ]

3. Physical components of a computer that can be touched are

a. Software [ ] b. Hardware [✓]

c. Both a. and b. [ ]

4. A set of instructions is known as

a. Software [✓] b. Hardware []

c. None of these []

B. Answer the following questions.

1. What is a computer?

Ans: A computer is an electronic machine that takes instructions from us and gives the result after processing.

                             Or

A computer is a powerful and useful machine which has a very high processing speed.

2. What is hardware?

Ans: All the physical parts attached to a computer are called Hardware.

3. Name any four hardware devices attached to the computer.

Ans: mouse, keyboard, cpu, monitor 

4. What is Data and Information?

Ans: Data is a collection of raw, unorganised facts and figures.  Information is the meaningful and organised form of data.

5. On which principle does a computer work?

Ans: A computer works on the principle of the following:

        INPUT > PROCESS > OUTPUT

C. Fill in the blanks.

1. All the physical parts of a computer are called _________________________

Ans: hardware

2. _______ is an example of a software.

Ans: MS-Paint 

3. The working speed of a computer is very ________________________________________

Ans: fast

4. The results given by by a computer are always ________________________

Ans: correct

5. Computers are used to play different types of __________________________

Ans: game

D. Name any four characteristics of computer.

1. Speed 2. Reliability and Accuracy

3. Versatility 4. Storage

E. Write any four uses of a computer.

1. Playing games 2. Watching videos

3. Listening to music 4. Drawing pictures

F. Write 'T' for True and 'F' for False statements.

1. You can touch software.                  [F]

2. MS-Paint is a hardware.                  [F]

3. CPU does all the processing.           [T]

4. All the physical parts of a computer are called hardware .                           [T]

5. A computer cannot store data.        [F]

6. A computer works on IPO cycle.     [T]

7. You cannot create a document on a computer.                                           [F]

8. A computer can store large amount of data.                                                    [T]