PSEB Punjab Board Class 6 Computer Science Textbook Solution Chapter 1 Introduction to Computer Exercise Questions and Answers
Lesson No – 1 Introduction to Computer
Exercise
Q1) Fill in the blanks :-
a) Computer is an ……………………………….
a) Electronic Machine
b) Mechanical Machine
c) Magnetic Machine
d) All of above
Ans – a) Electronic Machine
b) Computers can do
a) Calculation
b) Accept data and instructions
c) Storage
d) All of above
Ans – d) All of above
c) Computers perform in operations with high …………………………..
a) Speed
b) Accuracy
c) Efficiency
d) All of these
Ans – d) All of these
d) In banks, computers is used for
a) Keeping the bank safe
b) Keeping Accounts records
c) Keeping banks clean
d) None of these
Ans – b) Keeping Accounts records
e) Time taken by computer to do a work can be mentioned in :
a) Minutes
b) Hours
c) Milliseconds
d) All of these
Ans – c) Milliseconds
f) In Education, A computer is used for :
a) Preparing Notes
b) Preparing Result
c) Preparing Reports
d) All of these
Ans – d) All of these
g) Which one of these is limitation of Computer :
a) Speed
b) Accuracy
c) No IQ
d) Diligence
Ans – c) No IQ
Q2) Short Answer Type Questions :-
1) Define Computer.
Ans :- A computer is an electronic device that performs a function based on a given set of instructions. It also works on the principles of Hardwares and softwares.
2) Explain the uses of computer in Education Field ?
Ans :- Computers are used in education for taking online classes, online examinations/ tuitions, e-books etc. A computer can be much helpful in teaching. Teachers use computers to prepare lessons, results, question paper, whereas students use the computers to access internet, do projects works and research works too.
3) Write the names of any three Portable Computing Devices.
Ans :- The three Portable Computing Devices are Mobile (Smart Phones) , Tablet computers, Laptop computers.
Q3) Long Answer Type Questions :-
1) What are the Characteristics of Computer?
Ans :- The characteristics of the computers are as follows:-
- Automation :- Computers can automatically perform the given task. Once data and necessary instructions are stored into the computer memory, human intervention is not required. Some jobs such as searching from a large repository of data (or from Internet) are nearly impossible without automation.
- Accuracy :- Computers are able to perform complex arithmetic and logical computations with the highest accuracy. Properly designed computers provide highly accurate results. However, it is obvious that garbage (bad) results are produced by garbage (bad) input entered knowingly or unknowingly. This is called Garbage In Garbage Out (GIGO).
- Long-term storage :- Computers can store large amount of data in its secondary storage for long time. The stored content can be recalled easily on request. Unless specifically asked, the content will be preserved in the memory.
- Ability to perform mechanical and repetitive tasks :- Computers are able to perform mechanical tasks in consistent manner. They do not possess human oriented limitation such as loss of interest, likings, and physical capacity.
- Programmability :- Computers can be programmed to execute predefined set of instructions. Writing program once and executing it many times saves a lot of time and cost. The program once written can be modified later for the revised task. Therefore, computers are versatile to perform any activity, provided a step by step program is given.
2) Define any 5 applications of Computers.
Ans :- The 5 applications of computers are as followed :-
- Education :- Computers are used in education for taking online classes, online examinations/ tuitions, e-books etc. A computer can be much helpful in teaching. Teachers use computers to prepare lessons, results, question paper, whereas students use the computers to access internet, do projects works and research works too.
- Communication :- Computers are widely used in communication like sending/receiving emails, chatting, video conferencing, send any documents.
- Banks :- In banks its used to maintain customer’s/account holders information and their conducted transactions People also use computers to access information on stock markets, trade stocks and manage investments.
- Government offices :- Its widely used in government departments to improve the quality and efficiency of services. Use to maintain records on the legislative actions, maintaining land records etc.
- Homes :- Computers are used in homes for watching movies, making online bill payments, home tuitions, for playing games, accessing internet, social media, nowadays employees can do their office work from home, internet banking, online shopping etc.
3) What are the limitations of Computer?
Ans :- The limitations of a computer are as follows :-
- It cannot work or make decision on its own, because it don’t have all the abilities of decision making.
- It cannot respond/ work on a particular condition unless that condition is already programmed into them.
- It’s an electronic machine which means it requires electricity to work. If there’s no electricity it will not work.
- When the work is completed you need to save the work otherwise your work will go away.
- Like laptop, its not portable.
4) What do you mean by Portable Computing Devices? Explain any three of them?
Ans :- The Portable Computer Devices are the computer devices which are used for processing the data and can be carried from one place to another. The three types of
Portable Computing Devices are :-
- Mobiles :- This portable devices are populary known as cell phones or smart phones. This devices are used by many of the person and can be holded and operated in the hands, used for making and receiving calls, and process digitally. Some smartphones are available in the market with fastest processing speed, camera, recording, internet and large amount of storage capacity etc. The mobile phones works on battery which needs to be charged by charger whenever it is required and can be carried anywhere in the pockets.
- Tablet computers :- This is also one of the portable device which is works on battery. For inputting or operating it needs to be touched by the finger on its touch screen. It does not have the manual keyboard or the lid. This devices can be seen at the shopping malls, restaurants etc.
- Laptop computers :- This device is small and very light weighted with the availability of full screen /wide screen. This device has the keyboard already attached to it and a touch surface which fulfils the need of the mouse. This device also operates on battery and is kept on the persons lap while using. Hence it is called as Laptop. This device is used all types of applications and programs.
5) Explain the uses of computer ?
Ans :- Computers are widely used at some are which are :-
- Education :- Computers are used in education for taking online classes, online examinations/ tuitions, e-books etc. A computer can be much helpful in teaching. Teachers use computers to prepare lessons, results, question paper, whereas students use the computers to access internet, do projects works and research works too.
- Home :- Computers are used in homes for watching movies, making online bill payments, home tuitions, for playing games, accesing internet, social media, nowadays employees can do their office work from home, internet banking, online shopping etc.
- Medical field :- Computers are mostly useful in labs, pharmacies etc. Computers are maintained the records of patients and medicines, maintain hospital bills etc.
- Business :- Its used to mainly for sales forecasting, processing the transactions, maintain the employees records, planning purpose, presentation work, and preparing reports etc.
- Government :- Its widely used in government departments to improve the quality and efficiency of services. Use to maintain records on the legislative actions, maintaining land records etc.
- Banking and finance :- In banks its used to maintain customer’s/account holders information and their conducted transactions People also use computers to access information on stock markets, trade stocks and manage investments.
- Communication :- Computers are widely used in communication like sending/recieving emails, chatting, video conferencing, send any documents.
- Entertainment :- Computers are used for listening music, watching movies, playing games, creating animation /cartoon videos, recording sound or music etc.
- Reservation :- Computers are used to air flight, railway or bus tickets reservations online. People can book their tickets by sitting in their homes.
- Science and Engineering :- It is used by the scientists for the research works, sending and launching artificial satellites.
- Military :- Computer is widely used in defence in the matters of missile controlling, performing military operations and planning etc.
See below for more chapters solutions ⇓
- Computer Components
- Basics of working with computers
- Introduction To MS Paint
- MS Paint Part -2
- Hardware and Software
- Input Devices
- Output Devices
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