StudenteCare mission is to give people the power to build educational community and bring the Educators, Students, Parents, Consultant, University, Colleges, Schools and Coachings closer together
Ncert Solution | Ncert Solution for class 9th | NCERT solution for Class 9 Foundation of Information Technology | NCERT FOUNDATION OF INFORMATION TECHNOLOGY CHAPTER 2 COMPUTER SYSTEM ORGANISATION
by   Pooja Singla
Files Overall Price:    0.00
Videos Overall Price:    0.00
Total Overall Price:    0
Sold By:    Pooja Singla

Description Above File

NCERT Solutions for Class 9 Foundation of Information Technology chapter 2 Computer System Organisation

NCERT Solutions for Class 9 Foundation of Information Technology – Computer System Organisation are prepared by CBSE student eCARE expert to score good marks in class 9. This chapter contain many topics which are very important to score good in class 9. There are some important topic mentioned below:

The characteristics of a computer are as follows:

  • Accuracy Computer operates with very high degree of accuracy and can do 100% error free calculations. It does not get exhausted to the extent of making mistakes.
  • Speed Computer is generally known for its speed. It can process data very fast at the rate of millions of instructions per second. Units of speed is measured in micro seconds, nano seconds and pico seconds.
  • Diligence Unlike human beings, a computer is free from monotony, tiredness, lack of concentration etc and can do work for hours without creating any errors.
  • Automaticity It means that once the program is loaded in the memory of the computer system, the operations which are instructed by the program are performed one after the other without any human interference.
  • Versatility Computer is highly versatile in nature. It fits into different fields of human endeavour ranging from business, education, technology, engineering, law, commerce, agriculture, medicine, sports etc. It can perform different types of tasks which are provided in a logical way to execute.
  • Large Storage Capacity Data can be stored electronically in considerably less space which can be retrieved in a fraction of the time when needed. A limited amount of data can be stored temporarily in primary memory of computer. For permanent storage of data, secondary storage devices are used.
  • Plug and Play Computer has the ability to automatically configure a news hardware and software component.

 

Description Below File

Some questions are asked by class 9 students related to Foundation of Information Technology

Question 1.
Name the most commonly used input device.
Answer:
Keyboard is the most commonly used input device, which can also be used to type commands directing the computer to perform certain actions.

Question 2.
Explain the main advantage and disadvantage of an OCR?
Answer:
The main advantage of an OCR is the ability to scan the characters accurately.
The disadvantage of an OCR is limited number of characters offered by it.

Question 3.
Why do we use webcam?
Answer:
A webcam is basically used for capturing a series of digital images that are transferred by the computer to a server and then displayed to the hosting page.

Question 4.
Name the memory (Primary/Secondary)with the following features:

  • If current is interrupted, data is lost.
  • Before a program is ready to run, the program is loaded into this memory, which allows the CPU directly access the program.

Answer:
RAM because it has above given features.

Question 5.
Write any one advantage of cache memory.
Answer:
The main advantage of cache memory is that if needed data is found in cache, then CPU does not have to use mother¬board’s system bus for data transfer and processing gets fast.

Question 6.
Which disc is created using laser beam?
Answer:
CD-ROM disc is created using laser beam.

 

Question 7.
Give one difference between primary and secondary memory.
Answer:
The primary memory is volatile and has limited storage capacity, whereas secondary memory is non-volatile and can store huge amount of data.

Question 8.
Arrange the following memory units in ascending order of their storage capacities: Kilobyte, Byte, Terabyte, Megabyte, Geopbyte
Answer:
The ascending order of memory units is Byte, Kilobyte, Megabyte, Terabyte, Geopbyte.

 

Question 9.
Where can a memory card be used?
Answer:
Memory card can be used in digital camera, cell phones, camcoders, portable audio players, video players, PDAs, gaming consoles, laptops, printers etc.

Question 10.
Define the term byte. Differentiate between a bit and a byte.
Answer:
Byte is a unit of measuring computer storage. Binary digit is called bit in short. There are only two binary digits 0 and 1, whereas a combination of 8 bits is called a byte.