UNIT TEST 1 (SUNRISE PUBLICATIONS)

Q1. Answer the following questions:

a. What is computer?

Ans: Computer is an electronic machine that process raw data and gives meaningful information.

b. Which principle does computer follow to work?

Ans: The computer follows Input, Process and Output principle.

c. List any four basic part of computer.

Ans: Keyboard, mouse, monitor and system unit are the four basic parts of computer.

d. Why are computers called accurate machines?

Ans: If the data and instruction given to the computer are correct, it will always give correct result so computer are called accurate machine.

e. Write any two limitations of computer?

Ans: The two limitations of computer are:

a. A computer cannot generate information by itself.

b. Computer cannot take decisions itself.

f. List any two places where computers are used.

Ans: Home and School are the two places where computers are used.

Q2. Choose the best answer:

a. iv. All of the above

b. iv. GIGO

c. iii. CPU

d. iv. All of the above

Q3. Match the following

a. GIGO → Error due to wrong input

b. Accuracy → Feature of Computer

c. Processing → Action taken on data

d. Information → Processed data

Q4. State whether the following statements are true and false:

a. False

b. True

c. True

d. Monitor displays the output.

Q5. Write the technical terms for the following:

a. Information

b. Diligence

c. Programs

d. Input

Q6. Write the full forms of the following:

a. CPU: Central Processing Unit

b. ATM: Automated Teller Machine

c. MHz: Mega Hertz

d. GHz: Giga Hertz

Q7. Write Short Notes on:

a. Uses of Computer in office:

Computers are very useful in offices. People use computer to prepare different types of documents. It is used to keep employee's records. Computer helps in maintaining account ledgers of the offices. Computers are used to trained different level of employee.

b. Versatility:

Computer can perform different kinds of tasks one by one by one simultaneously. So, it is called versatile machine. It can perform several task such as calculations, drawing pictures, playing game, playing music, writing letters, sending e-mail, etc.