Computer Applications class IX

Computer Applications  

           Class IX

  Types of Software

 (Chap 3)

                           

                     

·        HARDWARE- Hardware represents the physical and tangible components of the computer i.e. the components that can be seen and touched. Input devices, output devices, CPU, floppy disk, hard disk, CD, DVD etc. are examples of computer hardware.

 

·        SOFTWARE- software represents the set of programs that govern the operation of computer system and make the hardware run.

 

·        SOFTWARE can be classified broadly into two categories.

 

1.      System Software- refers to the programs that control internal computer operations and make best use of the hardware.

The system software can further be classified into following categories:

Ø  Operating system

Ø  Language processor

Ø  Utilities or Utility Software

 

2.      Application Software- is the set of programs necessary to carry out operations for a specified application.

These are the programs written by programmers to enable computer to perform a specific task such as processing words, inventory control, handling calculations and figures, medical accounting, financial accounting, result preparation, railway reservation, billing etc.

 

 

Worksheet 1 (chap 3) July 2020:-

1.    Multiple choice questions:-

a)      The software that controls internal computer operations is called………………

i)      System software            

ii)     Application software

iii)    Hardware

iv)   None of these

b)     A program which acts as an interface between user and the hardware is called

i)       Operating system            

ii)     Application software

iii)    Memory

iv)   None of these

c)      HLL stands for

i)      High level language

ii)     Hybrid level language

iii)    High language label

iv)   None of these

d)     Which one of the following not a type of operating system?

i)      Linux

ii)     BOSS

iii)    Open Office

iv)   Windows

e)      Which one of the following is Antivirus software?

i)      Kaspersky

ii)     BOSS

iii)    MS Word

iv)   Unix

2.    What is application software? Why is it required?

3.    Name any two popular operating systems?

4.    Differentiate between hardware and software.

5.    What are various categories of software?


Worksheet 1 SOLUTION (chap 3) July 2020:-

1.    Multiple choice questions:-

a)      The software that controls internal computer operations is called………………

i)     System software            

ii)     Application software

iii)    Hardware

iv)   None of these

 

b)     A program which acts as an interface between user and the hardware is called

i)      Operating system            

ii)     Application software

iii)    Memory

iv)   None of these

c)      HLL stands for

i)     High level language

ii)     Hybrid level language

iii)    High language label

iv)   None of these

d)     Which one of the following not a type of operating system?

i)      Linux

ii)     BOSS

iii)   Open Office

iv)   Windows

e)      Which one of the following is Antivirus software?

i)     Kaspersky

ii)     BOSS

iii)    MS Word

iv)   Unix

 

2.    What is application software? Why is it required?

ANS2. Application software is the set of programs necessary to carry out operations for a specified application. Application software is required because system software cannot carry out the routine jobs performed by the user which application software can easily do.

To perform various kinds of activities, the application software comes in various categories:

i)      Packages

ii)     Specialized

iii)    Customized software

 

3.    Name any two popular operating systems?

      ANS3. Windows 7, Linux

 

4.     Differentiate between hardware and software.

ANS4. Hardware represents the physical and tangible components of the computer i.e., the components that can be seen and touched. Input devices, output devices, floppy disk, hard disk, CD, DVD etc. are examples of computer hardware.

Software represents the set of programs that govern the operation of a computer system and make the hardware run.

 

5.    What are various categories of software?

ANS5. There are broadly two categories of software:

(i)            System Software       (ii) Application Software


          SADHU SINGH

           T.G.T

           COMPTUTER

                                                                 WORKSHEET 02

System Software- refers to the programs that control internal computer operations and make best use of the hardware. The system software can further be classified into following categories:

Ø  Operating system

Ø  Language processor (Translators)

Ø  Utilities or Utility Software

1.      Operating System- An operating system is a program, which acts as an interface between a user and the hardware (i.e. all computer resources).    For eg.  Windows 7, MS DOS etc.

2.      Language processor- A program which is responsible for converting an HLL code (High level language code) into machine understandable code. 

The language processors are as follows:-

i.                    Assembler- This language processor converts the program written in assembly language into machine language.

ii.                 Interpreter- This language processor converts a High level language into machine language by converting and executing it line by line. If there is any error in any line, it reports it at the same time and program execution cannot resume until the error is rectified.

iii.               Compiler- It also converts the HLL program into machine language but converts the entire HLL program in one go, and reports all the errors of the program along with the line numbers.

 

Major components of a computer system are:

1.      Hardware

2.      The Operating System

3.      The Application program

4.      The Humanware (users)

Worksheet 02 solution (chap 3) July 2020:-

 

1.            Multiple choice questions:-

                                       i.            This language processor converts HLL into assembly language is called

a)      Assembler 

b)     Interpreter

c)      Compiler

d)     All of the above

                                     ii.            LCD stands for

a)      Liquid crystal display

b)     Light crystal display

c)      Light color display

d)     None of these

                                    iii.            This language processor converts a HLL program into machine language by converting and executing it line by line.

a)      Assembler

b)     Interpreter

c)      Compiler

d)     Operating system

                                   iv.            Which software takes control of computer system on startup?

a)      Compiler

b)     Operating System

c)      Application software

d)     All of these

                                     v.            The primary job of the operating system of a computer is to

a)      Manage resources

b)     be user friendly

c)      Provide utilities

d)     All of the above

 

 

2.    What are the major components of a computer system?

      Ans2. Major components of a computer system are:

1.      Hardware

2.      The Operating System

3.      The Application program

4.      The Humanware (users)

3.    Name two popular web browsers.

Ans3. Google Chrome, Internet Explorer

4.    What is operating system?

      Ans4. An operating system is a program, which acts as an interface between a user  

             and the hardware (i.e. all computer resources) For eg.  Windows 7, MS DOS etc.

 

5.    What is the difference between an interpreter and a compiler?

Ans5. An interpreter converts an HLL program into machine language line by line and simultaneously executes the converted line. Also, interpreter does not proceed unless the error is rectified.

A compiler converts an HLL program in machine language in one go. If there are errors in the program, it gives the error list along with the line numbers. 

      SADHU SINGH

           T.G.T

           COMPTUTER


                                                               WORKSHEET 03

Application Software- is the set of programs necessary to carry out operations for a specified application.

These are the programs written by programmers to enable computer to perform a specific task such as processing words, inventory control, handling calculations and figures, medical accounting, financial accounting, result preparation, railway reservation, billing etc.

 

Application software can further be subdivided into three categories:-

(i)                General Purpose Application Software

(ii)             Specific Purpose Application Software

(iii)           Customized software/Bespoke software

 

General Purpose Application Software-

This application software is a type of software that can be used for a variety of tasks. It is not limited to one particular function. As applications may be numerous, it is not feasible to design software for each of them. This has been designed to solve uses common or general tasks using a computer system. General purpose software is known as packages. Most common categories of packages are word processors, spreadsheets, desktop publishing software, database management systems, graphics, multimedia and presentation software.

 

Specific purpose application software-

The software that is designed to perform a specific task is known as special purpose application software. For e.g. financial accounting, payroll, library management etc. These applications are designed to be used for specific tasks such as company payroll, stock control systems, appointment systems, e-commerce etc. These are developed by a manufacturer to try to provide all of the features that they anticipate a company might need. Features which are available may not exactly as they would like in their business.

 

Customized Software- This type of software is tailor- made software according to a user’s requirements. These are developed to meet all the requirements specified by the user.  This is also known as tailor-made or bespoke software.

1.    Below is a list of various types of application software:-

A.     Database                                         E. Modelling                    

B.     Desk top publishing                       F. Spreadsheet

C.     Drawing                                            G. Web Design

D.    Mail merging                                    H. Word processing

 

Which one would be the most suitable to use for each of the following tasks?

a.    Rotation of shapes

b.    Typing in text for a novel

c.    Using frames to position text and graphics on a page

d.    Replication of cells

e.    Carrying out a complex search on two or more criteria

f.     A simple flight simulation

        Ans1.       

a.     C. (drawing)

b.     H (word processing)

c.     B (desk top publishing)

d.     F (spreadsheet)

e.     A (database)

f.      E ( Modelling )

          

2.    What is the full form of DBMS?

Ans2. Database Management System

 

3.    List some of the task performed by operating system.

Ans3. An operating system performs mainly following tasks:

(i)                Provides user interface

(ii)             Controls hardware

(iii)           Assigns Memory

(iv)           Handles applications

(v)              Handles/Manages devices

 

4.    What are utility programs?

Ans4. Utilites are those application programs that assist the computer by performing  housekeeping functions like backing up disk or scanning cleaning viruses etc.

 

5.    Explain the following:-

a.    Antivirus Software -  This utility program ensures virus free work environment. A computer virus is a computer program that can inject other computer programs by modifying them in such a way as to include a copy of itself. A virus not only copies itself but also makes the computer system behave abnormally.

 

b.    Encryption/Decryption Software-  Encryption refers to the conversion of electronic data into another form, encrypted form called ciphertext. Decryption is opposite of Encryption, i.e., converting cipher text to original form using correct key. Some popular encryption/decryption software are: LastPass, BitLocker, VeraCrypt, 7Zip, Symantec Endpoint Encryption etc.

 

 

 


                SADHU SINGH

                T.G.T

                COMPTUTER

 

 

 


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