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NCERT Solutions for Class 11 Computer Science (Updated for 2020

Free download of NCERT Solutions for Class 11 Computer Science 2020-21 Session solved by expert teachers from latest edition books and as per NCERT (CBSE) guidelines.

NCERT Solutions for Class 11 Computer Science (Python)

Detailed, Step-by-Step NCERT Solutions for Class 11 Computer Science (Python) solved by Expert Teachers as per NCERT (CBSE) Book guidelines. Download Now.

NCERT Solutions for Class 11 Computer Science (Python)

Here is the list of chapters for Class 11 Computer Science (Python) NCERT Textbook.

Unit 1 : Computer Fundamentals

1. Computer overview and its Basics

2. Software Concepts

3. Data Representation

4. Microprocessor and Memory Concepts

Unit 2 : Programming Methodology

5. Programming Methodology

6. Algorithms and Flowcharts

Unit 3 : Introduction to Python

7. Introduction to Python

8. Getting Started with Python

9. Operators in Python

10. Functions

11. Conditional and Looping Constructs

Unit 4 : Programming with Python

12. Strings

13. Lists, Dictionaries and Tuples

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NCERT Solution : Class 11 Computer Science Chapter 1 Computer System

NCERT Solution Class 11 Computer Science Chapter 1 Computer System PDF Download NCERT Class 11 Computer Science Chapter 1 Solution

NCERT Solution Class 11 Computer Science Chapter 1 Computer System

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NCERT Solution Class 11 Computer Science Chapter 1 Computer System: National Council of Educational Research and Training Class 11 Computer Science Chapter 1 Solution – Computer System. NCERT Solution Class 11 Computer Science Chapter 1 PDF Download.

NCERT Solution Class 11 Computer Science Chapter 1: Overview

Board

NCERT

Class

11

Subject

Computer Science

Chapter

1

Chapter Name

Computer System

Topic

Exercise Solution

NCERT Solution Class 11 Computer Science Chapter 1 – Computer System

1.) Name the software required to make a computer functional. Write down its two primary services?

Ans: To make a computer functional operating system is required. The two services of primary services:

1) Operating system provides services for building and running the application.

2) Operating system provide user interface to the user for enable interaction between computer and  user.

2.) How does the computer understand a program written in high level language?

Ans: Computer understands only machine level language (0 and 1). High level language is a simple English type language written in some symmetric format. To convert high level language into machine language there is need of compiler which can be understood by computer.

3.) Why is the execution time of the machine code less than that of source code?

Ans: We know that computer readable language is machine language. So there is no need to convert machine language whereas Source codes are written in high level language. So there is need to convert it into machine language first. Hence, the execution time of machine language is less than source code.

4.) What is the need of RAM? How does it differ from ROM?

Ans:  RAM (random access memory) is used for quickly accessing a data. RAM is a temporary storage memory and it stores the active using data. Whereas ROM is a read only memory and it is a permanent storage device. Data in RAM is erased when power goes off whereas in ROM data remain as it is.

5.) What is the need for secondary memory?

Ans:  Secondary memory provides a large storage facility as well as it is very cheap .There is a need of secondary storage because it is a permanent storage device. Unlike ROM and RAM secondary memory doesn’t have limited storage.

6.) How do different components of the computer communicate with each other?

Ans: Component of a computer communicate with each other with the help of system bus. System bus provides the facility to transfer the data as well as memory address between one component to another.

7.) Draw the block diagram of a computer system. Briefly write about the functionality of each component.

Ans:

INPUT UNIT :

Input unit has following function:

Input unit takes a data instruction from the user for further processing.

We know that computer understand machine language. Input unit converts the data to the machine language (machine readable form)

They are various types of input devices are available like keyboard, scanner, mouse, touch screen devices, etc.

CENTRAL PROCESSING UNIT:

CPU i.e.  Central processing unit is responsible for performing all tasks of computer. CPU is like a heart of computer.CPU consists of 3 units:

Primary memory Control unit

Arithmetic logic unit

ALU:

Arithmetic and logical unit responsible for performing all arithmetic operation like addition, subtraction, multiplication and division .It also responsible for conduct merging, sorting like all sorting techniques .All the calculations of the data perform by ALU.

Control unit:

Control unit is used to control the signals. Control unit receives the instruction, data, and information from input devices and converts it into control signals.

Primary memory:

There are two types of primary memory

RAM ROM

RAM:

RAM means random access memory.

It is a volatile storage.

The data stored in RAM temporary.

RAM stores the data of active task.

 ROM :

ROM mans read only memory.

The data stored in ROM is permanent.

It cannot be erased during the power cut off.

It is a non volatile memory.

OUTPUT UNIT:

An output device is one of the components of computer. output devices is responsible to convert machine code into the human readable form. Monitor, printer etc. are output devices.  The output given by the computer can be in any type like text, graphics, audio, video etc

8.) What is the primary role of system bus? Why data bus is is bidirectional while address bus is unidirectional?

Ans :  To transfer the data, address, control signal between the computer there is a need of system bus. With the help of system bus components of a computer can communicate with each other. Data bus is bidirectional because of two-way transfer process. IT transfers the data among CPU,memory and other peripheral devices. Address bus is unidirectional because whenever the data written in the memory, CPU placed the data on data bus. After that address bus provide specific address to   write the data.

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NCERT Book Class 11 Computer Science Chapter 1 Computer System

NCERT Book for Class 11 Computer Science Chapter 1 Computer System is available for reading or download on this page. Students who are in Class 11 or

NCERT Book Class 11 Computer Science Chapter 1 Computer System

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NCERT Book for Class 11 Computer Science Chapter 1 Computer System is available for reading or download on this page. Students who are in Class 11 or preparing for any exam which is based on Class 11 Computer Science can refer NCERT Book for their preparation. Digital NCERT Books Class 11 Computer Science pdf are always handy to use when you do not have access to physical copy.

Here you can read Chapter 1 of Class 11 Computer Science NCERT Book. Also after the chapter you can get links to Class 11 Computer Science Notes, NCERT Solutions, Important Question, Practice Papers, etc. Scroll down for Computer System from NCERT Book Class 11 Computer Science Book & important study material.

NCERT Book Class 11 Computer Science Chapter 1 Computer System

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