Chapter 2 Computer Hardware Grade 6( Sunrise Publication - 2082 edition)

 1. State whether the following statements are True or False.

a. True

b. False

c. False

d. False

2. Match the following:

Mouse ===> Points and selects GUI objects

Printer ===> It produces the hard copy output

ALU ===> Performs mathematical calculations

ROM ==> The instructions stored in it can not be changed by the user

Pendrive ==> It can be considered as a small external hard disk

3. Answer the following questions:

a. Define the term Computer hardware.

Ans: Computer hardware are the physical parts of computer, which make up complete computer system. For eg, Keyboard, Mouse, Monitor, etc

b. What are input devices? List any two input devices.

Ans: The devices that are used to enter data and instructions into the computer are called input devices. Eg. Keyboard, Mouse, Scanner, Web camera, Joystick etc

c. What is processing devices? Write the name of processing devices.

Ans: The device which are used to process raw data according to set of instructions are called processing devices. Eg. CPU

d. What are output devices? Name any two common output devices.

Ans: The devices which are used to give the processed result of the computer are called output devices. Eg. Monitor, Printer, Plotters, Speaker etc.

e. Differentiate between soft copy output and hard copy output.

Ans: The different between Soft-copy and hard-copy output are given below.

 

Soft Copy Output	Hard Copy Output
a. It is in electronic form	a. It is in printed form
b. It is easier to modify	b. It is difficult to modify.
c. It is stored on storage devices	c. It is printed on paper.
d. It is intangible	d. It is tangible

f. What are storage devices? Write two such devices.

Ans: The devices which are used to store data and program in the computer are called storage device. eg RAM, Hard disk etc.

g. What is primary memory? What are its types.

Ans: The primary memory is  the main memory or internal memory of the computer where data and instruction are stored while executing the program.

Types of primary memory are : 

i. RAM             ii. ROM

h. What are the difference between RAM and ROM?

Ans: The difference between ROM and RAM are given below.

ROM	RAM
a. It stand for Read only memory	a. It stand for Random Access Memory
b. It is non volatile or permanent memory.	b. It is volatile or temporary memory
c. It is startup memory of a computer	c. It is working memory of computer. It is volatile or temporary memory
d. We can read but can't write in it	d. We can read and write

i. What is CPU? List its major parts.

Ans: CPU also called microprocessor is a main processing device of the computer. It is also considered as brain of the computer which all the arithmetic and logical operations in computer. 

The major parts of CPU are : 

1. Control Unit
2. Arithmetic Logic Unit
3. Registers.

j. Write short notes on the following:

i. Keyboard

   Keyboard is the basic and fundamental input device of a computer. There are different types of keys on the keyboard by pressing these keys we can give command to the computer. We can input data and instructions in to a computer by pressing keys on the computer.

 ii. Control unit

Control unit  is used to control and manage all the activities of the computer system. It controls the execution of instructions given to the computer. It communicates between ALU, registers and memory.

iii. Printer

   Printer is the basic output device that is used to print the output on the paper. The output printed on the paper is called hard copy output so the output given by the printer is known as hard copy output. eg. Dot Matrix printer, Laser printer, Inkjet printer.

iv. Cloud Storage

   It is a service model in which data are stored on remote storage systems. where it is maintained, managed, backed up and made available to users over the internet. Amazon Web Services, Google and Microsoft Azure are the cloud storage service providers.

k. What is projector? What are two common types of projectors?

 Ans: The output device which takes images generated by a Blu - ray player or a computer and projects them onto a large surface like a wall or white screen is called projector.

The two common types of projectors are

Liquid Crystal Display (LCD)

Digital Light Processing (DLP)

4. Write the full forms of the following:

a. ALU: Arithmetic Logic Unit

b. CU: Control Unit

c. CD: Compact Disk

d. DVD: Digital Versatile Disk

e. ROM: Read Only Memory

f. RAM: Random Access Memory

g. USB: Universal Serial Bus

h. LCD: Liquid Crystal Display

i. CRT: Cathode Ray Tube

j. LED: Light Emitting Diode

5. Write technical term for the following statements:

a. Computer Hardware

b. Input Device

c. ALU

d. Secondary Storage Device

e. RAM

f. QR code.

Chapter 1 Computer Overview Grade 7 ( Sunrise Publication - 2082 edition)

 Q1. Fill in the blanks with suitable words:

a. software

b. mouse

c. set of instructions

d. hertz

e. clock rate

f. communication systems

Q2. Match the following column:

Data → Raw fact

GIGO → Accuracy

Computer game → Entertainment

CAI → Teaching aid

Q3. Sate whether the following statements are True and False:

a. True

b. False

c. False

d. False

Q4. Write full forms of the following:

a. CPU                          : Central Processing Unit

b. GHz                          : Giga Hertz

c. GIGO                       : Garbage In Garbage Out

d. E-mail                      : Electronic mail

e. CD                            : Compact Disk

f. DVD                         : Digital Versatile Disk

g. CAI                          : Computer Aided Instruction

h. CBT                         : Computer-Based Training

i. ICU                           : Intensive Care Unit

j. ECG                         : Electrocardiograph

k. GUI                         : Graphical User Interface

Q5. Write the technical terms for the following statements:

a. Diligence

b. Versatile

c. GIGO

d. Data

Q6. Select the correct answer from the given options.

a. iii. Input, Processing and Output

b. iv. All

c. i. GIGO

d. ii. Output

Q7. Write very short answer of the following questions:

a. What is data?

Ans: Raw facts or symbols also known as unprocessed information collected from various sources is known as data. For example Ram, 7, student.

b. What is the measurement unit of clock speed of computer?

Ans: The measurement unit of clock speed of computer is in hertz. It can be measured in MHz or GHz.

c. Write any one use of computer in medical field.

Ans: All the laboratory tests such as X-RAY, CT-SCAN etc. are performed by computers.

d. Which unit of computer is used to process data?

Ans: Central Processing Unit(CPU) is used to process data.

e. Is computer, an electronic device?

Ans: Yes, computer is an electronic device.

f. What is GIGO?

Ans: If the input data are incorrect, the output will also be incorrect, this principle is referred as GIGO.

g. Why is computer called versatile machine?

Ans: Computer is called versatile machine because it can perform different kinds of tasks one by one simultaneously.

Q8. Write short answer of the following questions:

a. Define Computer and draw the figure of computer.

Ans Computer is an electronic machine, that accepts the data and instructions from the user, processes the data according to given set of instructions, stores and gives the information.

For fig see on page number 6

b. How are computers used in education and entertainment?

Computers in Education

Computers are widely used in the field of education. Teachers can explain difficult topics more clearly and easily to their students using computer-based presentations. Students can learn different subjects more clearly and easily with the help of computer. Open universities are launching their distance learning programs through computer-based training (CBT) which is also called Computer Aided Instructions (CAI).

                                                            Computers in Entertainment

Computer can be taken as a good means of entertainment. We can play games, watch movies and listen music on the computer. In movies special effects are added to make it like real. Cartoon and animation movies are developed with the help of  computer.

c. Explain the working system of a computer with an example.

Ans: Computer perform its task on the basic principle of Input Process and Output (IPO). Computer takes raw data as input through the input devices such as keyboard, mouse, joystick, etc and computer process the input data according to the given set of instructions and after processing, input data, computer gives the meaningful information as output.

    [Data: 7, 9, 11 ]      →         [ Addition ]          →             [ 27 ]

             (Input)             →         (Process)             →          (Output)

d. List any four characteristics of a computer.

Ans: The four characteristics of a computer are:

i. Accuracy        ii. Diligence        iii,  Versatility        iv. Automation

e. List any five application fields of a computer.

Ans: The five application fields of a computer are:

i. Home        ii. Education        iii. Medicine and Health        iv. Entertainment    v. Industry

f. Why is computer called an information processing machine?

Ans: Computer converts raw data into meaningful information by performing various actions on the given data so it is known as information processing machine (IPM). 

g. Write short notes on :

a. Accuracy:

Computer is an accurate machine. It doesn't make any mistakes, if the data and instructions given to the computer are correct, it always gives correct result or output. If the input data are incorrect, the output will also be incorrect, which is also known as Garbage In Garbage Out (GIGO).

b. Diligence:

Computer is a diligent machine. It can continuously work for a long time without creating any error. It can perform same task again and again without getting bored. It performs the calculations with the same accuracy and speed though it works for long time.

c. Versatility:

Computer is a flexible machine. It can perform different kinds of tasks one by one simultaneously. It can perform the several tasks such as calculations, drawing pictures, playing game, playing music, writing letters, sending e-mail, etc. We can use the same computer in different fields for different tasks.

d. Computer in Medicine and Health:

Computers are used for diagnosing illnesses, monitoring the condition of patients, keeping the necessary records. It can be used in the different units such as ICU, ECG, Operation Theater, Recovery Room, Medical Ward, etc. All the laboratory tests are performed by computers. Computers are used to monitor patients continuously.

h. What is an online payment gateway?

Ans: An online payment gateway is a service which allows users/customers to do direct financial transactions by using credit card over the internet and other modes. For Example Esewa, Khalti, IME pay etc.

Chapter 1 Introduction to Computer Grade 6( Sunrise Publication - 2082 edition)

 Q1. Match the following columns:

Nibble → Collection of four bits

Speed → Has the capacity to do several tasks within a second

System Unit → Computer Part

Communication → Exchanging information throughout the world

Q2. State whether the following statements are True or False.

a. False

b. True

c. False

d. True

Q3. Choose / Select the correct answer from the given options:

a. ii. Latin

b. iii. Both

c. ii. Hertz

d. iii. Power plug

Q4. Answer the following questions:

a. Define a computer with its proper meaning.

Ans: A computer is an electronic machine, that takes data and instructions as an input, processes the data according to the given set of instructions and gives the meaningful information as result.

b. What are the four basic parts of computer?

Ans: The four basic parts of computer are keyboard, mouse, monitor and system unit (CPU).

c. List any four features of computer.

Ans: The four features of computer are:

i. Speed        ii. Accuracy        iii. Diligency        iv. Versatility

d. Define the term Garbage In Garbage Out.

Ans: If the data and instruction given to the computer are correct, it will always produce accurate result but sometimes it also produce undesirable result which is due to wrong input it is known as Garbage-In Garbage-Out (GIGO).

e. List out four places where computers are mainly used.

Ans: The four areas of computer are:

i. Home        ii. Education        iii. Medical and Health         iv. Entertainment

f. How are computers used in education?

Ans: Computers play an important role in education by supporting teaching, learning, and research. They help teachers to present topics clearly through Computer-Based Presentations (CBP) and allow students to access books, journals, and study materials in the library. Distance learning is also made possible through Computer-Based Training (CBT). Students can also search study material through search engines such as google, yahoo, etc.

g. Write any two limitations of computer.

Ans: Two limitations of computer are:

i. Computer has no intelligence of its own.

ii. Computer fully depends upon human beings.

h. What are reliable online payment service providers in Nepal?

Ans: The reliable online payment service providers in Nepal are: E-Sewa, Khalti, IME Pay, Namaste Pay and Qpay.

Q5. Write Full Forms of the following:

a. CPU                        : Central Processing Unit

b. MHz                        : Mega Hertz

c. CBT                        : Computer-Based Training

d. CAI                        : Computer Assisted Instruction

e. ICU                        : Intensive Care Unit

f. POS                        : Point Of Sales

g. GIGO                    : Garbage In Garbage Out

Q6. Write suitable technical term for the following statements.

a. Diligent

b.  GIGO

 c. Pacemakers

 d. 1 byte 

e. Online Payment

Chapter 1 Computer Overview Grade 5 ( Sunrise Publication - 2082 edition)

 Q1. Label the different parts of system unit in the following figures:

a. CD/DVD drive

b. USB Port

c. Audio In/Out Port

d. Power button 

e. Restart button

a. Audio In/Out ports

b. USB ports

c. VGA port

d. PS/2 Ports

e. Ethernet port

Q2. Match the following:

a. Power Button → Used to read/write data from DVD

b. USB ports → Used to connect different USB devices

c. DVD Drive → Used to read/write data from DVD

d. VGA port → Used to Connect Monitor with the system Unit

e. Audio In Port → Used to connect various audio devices.

Q3. Fill in the blanks with the words from the box below:

a. instructions

b. wirelessly

c. process

d. Computare

e. VGA

f. CPU

Q4. Answer the following questions:

a. Define a Computer.

Ans: Computer is an electronic machine that can perform different kinds of tasks according to a set of instructions given to it.

b. What are the basic parts of a computer?

Ans: The basic parts of a computer are Monitor, Keyboard, Mouse and System Unit.

c. How does a computer work? Explain with an example.

Ans: Computer works on the principle of IPO which is Input → Process → Output.

         [Data: 7, 9, 11 ]  -- >  [ Addition ]  -- >      [ 27 ]

             (Input)                      (Process)              (Output)

d. Write any four characteristics of a computer.

Ans: The four characteristics of a computer are:

a. High Speed        b. Accuracy         c. Diligent        d. Versatile

e. Write any four areas where computers are used.

Ans: The four areas computers are used are:

a. Home        b. School         c. Office        d. Hospitals

f. Explain how computers are used in education.

Ans: Education is one of the important areas of computer. In schools and colleges, computers help in both teaching and learning. Students can use computers to search for books, read online books, and explore magazines. Computer also help to prepare the progress card, present the multimedia content and so on.

g. Why are computers called accurate machines?

Ans: Computers are called accurate machines because they never produce wrong output, if input is correct.

h. Why are computers called diligent machines?

Ans: Computers are called diligent machines because they can work continuously for a long period of time.

i. What is meant by versatility of computer?

Ans: The computer can be used in different fields to perform various tasks. This feature is known as versatility of computer.

j. What is a computer mouse?

Ans: A computer mouse is a palm sized input device that consists of two or more buttons at its top and a scroll wheel. It is also called pointing device.

5. Write Single word for the following statements.

a. Diligent

b. Information

c. GIGO

d. CPU

e. Versatile

f. Mouse

g. Ethernet Port

h. Monitor Port.

Q6. Write the full forms of the following:

a. VDU: Visual Display Unit

b. CPU: Central Processing Unit

c. USB: Universal Serial Port

d. MHz: Mega Hertz

e. GHz: Giga Hertz

f. ENIAC: Electronic Numerical Integrator And Computer

g. LED: Light Emitting Diode

h. LCD: Liquid Crystal Display

i. SSD: Solid State Drive

j. USB: Universal Serial Bus

Q7. Draw a picture of front view of a system unit.

Ans: Draw the image from page number 11 and mention its part too.

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.

Chapter 1 Grade 4 ( Sunrise Publication - 2082 edition)

 Q1. Fill in the blanks:

a. raw data

b. computare

c. process

d. CPU

e. processing speed.

Q2. Write the characteristics of a computer in a single word.

a. Diligent

b. Accuracy

c. High Speed

d. Versatile

Q3. Answer the following questions.

a) Write any four electronic machines that we use in our daily life.

Ans: Calculator, Television, Mobile phone, Camera are the four electronic machines that we use in our daily life.

b) What is computer?

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

c) Which was the first calculating device in the world?

Ans: Abacus was the first calculating device in the world.

d) What are the four basic parts of computer?

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

e) What is the basic working principle of a computer?

Ans: Input >> Process >> Output is the basic working principle of a computer.

f) Write down any four characteristics of a computer.

Ans: Four characteristics of a computer are : High speed, Accuracy, Diligent, Versatile

g) Write down any four places where computers are used.

Ans: Computer are used in different places such as home, school, office, hospital, bank etc.

h. Why are computer called accurate machine?

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

i. Why are computer called versatile machine?

Ans: A computer can perform different of tasks one by one simultaneously. So, it is called versatile machine

Q4. Write Full Form of the following.

a CPU: Central Processing Unit

b. ATM: Automated Teller Machine

c. MHz: Mega Hertz

d. GHz: Giga Hertz

Q5. State Whether the following statements are true or false:

a. False

b. False

c. True

d. True

e. False

f. False

Q6. Write the technical terms for the following:

a. GIGO

b. Information

c. Diligent

d. Versatile

Q7. Choose the best answer:

a. iv. All of the above

b. iv. All of the above

c. iv. Both (ii) and (iii)

d. i. Processing

e. iv. GIGO

f. ii. Diligence

Q8. Match the following:

a. Keyboard → input device

b. IPO → Working Principle of computer

c. Set of Instructions → Program

d. Processing → Action taken on data

e. Versatile → Characteristics of Computer

Q9. Find the computer related words from the following:

MONITOR, KEYBOARD, MOUSE, PROCESSING, DATA