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Ncert Solution | Ncert Solution for class 11th | Ncert Solutions for class 11 Computer Science Python | NCERT COMPUTER SCIENCE PYTHON CHAPTER 1 COMPUTER OVERVIEW AND ITS BASICS
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NCERT Solutions for Class 11 Computer Science (Python) Chapter 1 Computer overview and its Basics

Ncert solutions for class 11 Computer Science Python Chapter 1 Computer overview and its Basics are prepared by CBSE student eCARE expert to score good marks in class 11. Classes 11 Computer Science Python Chapter 1 Computer overview and its Basics contain many topics which are very important to score good in class 11. There are some important topic mentioned below:

Memory Unit stores the data, instructions, intermediate results and output temporarily, during the processing of data. This memory is also called the main memory or primary memory of the computer. The input data that is to be processed is brought into the main memory before processing.

Speed, accuracy, diligence, storage capability and versatility are some of the key characteristics of a computer. A brief overview of these characteristics are :

  1. Speed : The computer can process data very fast, at the rate of millions of instructions per second. Some calculations that would have taken hours and days to complete otherwise, can be completed in a few seconds using the computer.
  2. Accuracy : Computer provides a high degree of accuracy. For example : the computer can accurately give the result of division of any two numbers up to 30 decimal places.
  3. Diligence : When used for a longer period of time, the computer does not get tired or fatigued. It can perform long and complex calculations with the same speed and accuracy from the start till the end.
  4. Storage Capability : Large volumes of data
    and information can be stored in the computer and also retrieved whenever required. A limited amount of data can be stored temporarily in the primary memory. Secondary storage devices like DVD and compact disk can store a large amount of data permanently.

A computer is an electronic device which can perform various operations correctly and fast. For example data processing, huge calculations etc. Characteristics of computer :

  1. Speed : Its speed is very fast. A modern computer can execute millions of instructions in one second.
  2. Accuracy : A computer can give accurate results up to 20 to 30 places of decimal.
  3. High storage capacity : A computer can store large amount of data in very small space.
  4. Versatility : A computer c3n do different types of tasks like data processing, graphics, audio and visual effects.
  5. Repetitive: A computer makes no mistake in repeating anything as many times.

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Some questions are asked by class 11 students related to Computer Science (Python)

Question 1:
Which part interprets program instructions and initiate control operations ?
Control unit.

Question 2:
What is primary memory ?
Primary memory : This is the storage section of computer which is used to store data or instructions or both for processing purpose. This is non-volatile in nature.

Question 3:
What is RAM ?
RAM : RAM stands for Random Access Memory.
This is the main memory of computer used to retain user’s instructions and data for processing purpose. This is volatile in nature .

Question 4:
What is ROM ?
ROM : ROM stands for Read Only Memory. ROM applies to semiconductor memory whose contents cannot be altered, once they have been set. So non-volatile in nature.

Question 5:
What is PROM ?
PROM : PROM stands for Programmable Read Only Memory. A control memory in which stored
contents can be altered once after they have been set.

Question 6:
What is EPROM ?
EPROM : EPROM stands for Erasable Programm able Read Only Memory. It can be erased and programmed with a special type of equipment. If it is exposed in ultraviolet light, it allows data to be erased and reprogrammed.

Question 7:
What is EEPROM ?
EEPROM : EEPROM stands for Electrically Erasable Programmable Read Only Memory. This type of ROM can be erased and programmed with the help of electric pulse.

Question 8:
Give three examples of both input devices and output devices.
Input Devices :

  1. Keyboard
  2. Mouse
  3. Scanner

Output Devices :

  1. Monitor
  2. Speaker
  3. Printer

Q Compare human beings with computer.
What is the difference between man and computer ?
A computer is an electronic device which can process data to give meaningful information with the help of a set of instructions called ‘Program’.
In computer, following are the advantages as compare to man :

  1. It is faster as compared to human beings
  2. It is more accurate in comparison to human being. “
  3. It can store a huge amount of information that can be retrieved instantly as compared to the human beings.
  4. It is immune to boredom and tiredness.
  5. It is versatile, can do different types of work with same accuracy and speed.

A computer has following disadvantages :

  1. A computer does not have its own intelligence that a man has.
  2. A computer cannot work without power
    (electric or battery)