Computer Software and Its Types

📘 Notes – Computer Software and Its Types

1. Computer System

A computer system has two main components:

1. Hardware
2. Software

Hardware

• Hardware refers to the physical parts of a computer that we can touch and see.
• Examples: Monitor, Keyboard, Mouse, CPU, Printer
• Hardware cannot work without software.

Software

• Software is a set of programs and instructions that tell the computer what to do.
• Examples: Games, Music players, Videos, Documents, Operating system
• We cannot touch software.

Types of Software:

Software is divided into two main types:

1. System Software
2. Application Software

1. System Software

System software controls and manages the computer system.

Types of System Software:

1. Operating System
2. Language Processor
3. Utility Software

Operating System (OS)

• An Operating System is the most important software that manages the computer and works as an interface between user and hardware.

Examples of Operating Systems:

Desktop / Laptop OS: Microsoft Windows 10, Linux, Mac OS, .

Mobile OS: Android, iOS

Types of Operating Systems

1. GUI (Graphical User Interface)

• Allows users to interact with computer using icons, menus and mouse.

2. Multi-User OS

• Allows many users to use the same computer at the same time.

3. Multi-Processing OS

• Allows one program to run on multiple CPUs.

4. Multi-Tasking OS

• Allows more than one program to run at the same time.

5. Multi-Threading OS

• Allows different parts of a program to run simultaneously.

6. Real-Time OS

• Responds immediately to inputs.

Example: Aeroplane autopilot systems

Language Processor

• A language processor converts programs written in programming languages into machine language so the computer can understand them.
• Examples of programming languages: C, C++, Python, Java

Utility Software

• Utility software helps maintain and protect the computer system.
• Examples: Disk Cleanup, Antivirus
• Examples of antivirus: Norton Antivirus, Quick Heal, AVG Antivirus

2. Application Software

Application software is used to perform specific tasks for users.

Types:

1. General Purpose Software
2. Specific Purpose Software

General Purpose Software

• Used for common tasks by many users.
• Examples: Word Processing, Microsoft Word, Spreadsheet, Microsoft Excel, Presentation, Microsoft PowerPoint

Specific Purpose Software

• These are created for specific tasks of an organization or person.
• Examples:

1. Railway reservation system
2. Airport ticket booking system
3. Supermarket billing system

📘 Exercise Solutions

A. Tick the Correct Answer

1. Which of the following is a set of programs that controls the operations of a computer?

✅ (a) software

2. Which of the following is a set of instructions telling a computer what to do?

✅ (c) program

3. Which software is used to control and manage devices attached to a computer?

✅ (b) device driver

4. A computer only understands ______ language.

✅ (a) binary

5. The two types of software are system software and ______ software.

✅ (a) application

B. Fill in the Blanks.

1. Hardware and software are the main components of a computer.

2. System software is required to control the overall operations of a computer system.

3. Operating system is the most important software of a computer system.

4. Android and iOS are examples of mobile operating systems.

5. Aeroplane autopilots are controlled by real-time operating systems.

C. True or False:

1. Software can be classified into four types.

❌ False

2. A word processor is an application software.

✅ True

3. Application software helps to run other software on a computer.

❌ False

4. Billing system used at supermarkets is an example of general purpose software.

❌ False

5. Antivirus software disturb the normal functioning of a computer.

❌ False

D. Match the Following:

Column A Column B

1. MS PowerPoint (d) Presentation software

2. Spreadsheet software (e) MS Excel

3. MS DOS (a) Operating system

4. Disk Cleanup (b) Utility software

5. Hardware (c) CPU

E. Answer the Following:

1. What is software? Give examples.

Ans: Software is a set of programs that instructs the computer to perform tasks.

Examples: Microsoft Word, Microsoft Excel, Microsoft PowerPoint

2. What are the functions of an operating system?

Ans: Functions of operating system:

1. Controls computer hardware
2. Runs application programs
3. Manages files and memory
4. Provides user interface
5. Manages input and output devices

3. Write a short note on Utility Software.

Ans: Utility software is designed to maintain and manage computer system performance.

Examples: Disk Cleanup, Antivirus software

These programs help to remove unnecessary files and protect the computer from viruses.

4. What is the use of a language translator?

Ans: A language translator converts programs written in programming languages into machine language, which the computer can understand.