Operating System
An OS is a collection of system program that together controls the operations of the computer system. This note contains a brief description of the Operating System.
Summary
An OS is a collection of system program that together controls the operations of the computer system. This note contains a brief description of the Operating System.
Things to Remember
- The computer system is a collection of different hardware components.
- An OS is a collection of system program that together controls the operations of a computer system. Example: UNIX, MS-DOS, MS-Windows, Linux etc.
- in broad approach, we can classify the operating system on the basis user interface like command or character user interface operating system and graphical user interface operating system.
- CUI provides the interactive terminal where a user could enter the command to interpret.
- GUI consists of different components such as text box, icon, desktop, pointing devices etc.
MCQs
No MCQs found.
Subjective Questions
Q1:
Define the concept of business.
Type: Very_short Difficulty: Easy
Show/Hide Answer
Answer: <p>The term 'business ‘refers to all the economic activities carried on by people and organizations for generating incomes.</p>
Q2:
Define the concept of business.
Type: Short Difficulty: Easy
Show/Hide Answer
Answer: <p>The term 'business ‘refers to all the economic activities carried on by people and organizations for generating incomes. It is concerned with producing and distributing goods and services for earning a profit. It is a regular process of exchanging goods and services which involve risk and uncertainty.</p>
<p><strong>According to James Stephenson</strong>, “Economic activities performed for earning profits are termed as the business."</p>
<p>From the above definitions, it is clear that the business is the economic activity of individuals and organizations aimed at earning profit through the production and distribution of goods and services.</p>
<p>Generally, there are two concepts of business:</p>
<ul>
<li><strong>Traditional Concep</strong>t<strong>:<br /></strong>The traditional concept explains that the business of business is to earn profit through production and marketing of products. Products may be different types for example physical goods, services, Ideas, and information etc. The main motto of business is to maximize only profit as per traditional concept.<br /><br />
<h4><strong>Modern Concept</strong>:</h4>
Consumer satisfaction is the central point of the Modern concept of business. Profit can be earned by maintaining social responsibility. It strives to include every aspect of human civilization. It views the modern business as a socio-economic institution which is always responsible towards the society.</li>
</ul>
<p><strong>According to James Stephenson</strong>, “Economic activities performed for earning profits are termed as the business."</p>
<p>From the above definitions, it is clear that the business is the economic activity of individuals and organizations aimed at earning profit through the production and distribution of goods and services.</p>
<p>Generally, there are two concepts of business:</p>
<ul>
<li><strong>Traditional Concep</strong>t<strong>:<br /></strong>The traditional concept explains that the business of business is to earn profit through production and marketing of products. Products may be different types for example physical goods, services, Ideas, and information etc. The main motto of business is to maximize only profit as per traditional concept.<br /><br />
<h4><strong>Modern Concept</strong>:</h4>
Consumer satisfaction is the central point of the Modern concept of business. Profit can be earned by maintaining social responsibility. It strives to include every aspect of human civilization. It views the modern business as a socio-economic institution which is always responsible towards the society.</li>
</ul>
Q3:
Explain the concept and characteristics of business.
Type: Long Difficulty: Easy
Show/Hide Answer
Answer: <p>The term 'business ‘refers to all the economic activities carried on by people and organizations for generating incomes. It is concerned with producing and distributing goods and services for earning a profit. It is a regular process of exchanging goods and services which involve risk and uncertainty. In fact, business is an economic activity aimed at fulfilling the needs and wants of customers through the supply of goods and services through the supply of goods and services for their satisfaction.</p>
<p><strong>According to L.H Haney</strong>, "Business may be defined as a human activity directed towards producing or acquiring wealth through buying and selling of goods."</p>
<p><strong>According to James Stephenson</strong>, “Economic activities performed for earning profits are termed as the business."</p>
<p>From the above definitions, it is clear that the business is the economic activity of individuals and organizations aimed at earning profit through the production and distribution of goods and services.</p>
<p>Generally, there are two concepts of business:</p>
<ul>
<li><strong>Traditional Concep</strong>t: The traditional concept explains that the business of business is to earn profit through production and marketing of products. Products may be different types for example physical goods, services, Ideas, and information etc. The main motto of business is to maximize only profit as per traditional concept.<br /><br /></li>
<li><strong>Modern Concept</strong>: Consumer satisfaction is the central point of the Modern concept of business. Profit can be earned by maintaining social responsibility. It strives to include every aspect of human civilization. It views the modern business as a socio-economic institution which is always responsible towards the society.<br /><br /><br />
<h4>Characteristics of Business</h4>
<ul>
<li><strong>Human Activity: </strong><br />Business is a human activity, No business can be performed without human efforts. The stakeholders of business such as workers, manager owner’s etc play an important part in the business.<br /><br /></li>
<li><strong>Economic Activity</strong>: <br />It is an activity which involves in exchange of goods and services for money. It does not include non-economic activities which are not directed to generating income.<br /><br /></li>
<li><strong>Enterprise</strong>: <br />Business is an enterprise of a person who generates an idea, bears the risk, produces new products or services and sell them to the consumers. The owner or entrepreneur generates the idea of business.<br /><br /></li>
<li><strong>Production and Distribution</strong>: <br />Business involves in production and distribution of goods and services. The production and distribution of goods and services are carried on to the satisfaction of the customers.<br /><br /></li>
<li><strong>Customer Satisfaction</strong>: <br />Every business activity is centered on customer service and their satisfaction. No business can exist over a long period of time without satisfying the needs and wants of the customers.<br /><br /></li>
<li><strong>Continuity in Dealing</strong>: <br />Business must be regular and continuous in its dealings. It must continuously and regularly produce and sell goods and services to customers. One time dealing cannot be termed as a business.<br /><br /></li>
<li><strong>Risk and Uncertainty</strong>: <br />Every business activity involves risk and uncertainty to some extent. The risk of loss is ever present in every business activity. Hence, there is no certainty that the business activity always results in profit.<br /><br /></li>
<li><strong>Profit Motive</strong>: <br />Profit is an essence of business. The activities relating to production and distribution of goods and services are carried on with the aim of earning profit.<br /><br /></li>
<li><strong>Finance or Capital</strong>: <br />Business needs some capital to acquire some production and distribution of goods and services can be produced and marketed thus Capital is said to be the lifeblood of business. No business ever can be started and successfully run without adequate finance.<br /><br /></li>
<li><strong>Ownership and Employment</strong>: <br />Every business is owned by an individual or a group of individuals. The owner contributes capital to start and run the business. Business may be sole trading, partnership, joint stock or a cooperative. Except sole trading, other forms of business need employees for the day to day activities.</li>
</ul>
</li>
</ul>
<p><strong>According to L.H Haney</strong>, "Business may be defined as a human activity directed towards producing or acquiring wealth through buying and selling of goods."</p>
<p><strong>According to James Stephenson</strong>, “Economic activities performed for earning profits are termed as the business."</p>
<p>From the above definitions, it is clear that the business is the economic activity of individuals and organizations aimed at earning profit through the production and distribution of goods and services.</p>
<p>Generally, there are two concepts of business:</p>
<ul>
<li><strong>Traditional Concep</strong>t: The traditional concept explains that the business of business is to earn profit through production and marketing of products. Products may be different types for example physical goods, services, Ideas, and information etc. The main motto of business is to maximize only profit as per traditional concept.<br /><br /></li>
<li><strong>Modern Concept</strong>: Consumer satisfaction is the central point of the Modern concept of business. Profit can be earned by maintaining social responsibility. It strives to include every aspect of human civilization. It views the modern business as a socio-economic institution which is always responsible towards the society.<br /><br /><br />
<h4>Characteristics of Business</h4>
<ul>
<li><strong>Human Activity: </strong><br />Business is a human activity, No business can be performed without human efforts. The stakeholders of business such as workers, manager owner’s etc play an important part in the business.<br /><br /></li>
<li><strong>Economic Activity</strong>: <br />It is an activity which involves in exchange of goods and services for money. It does not include non-economic activities which are not directed to generating income.<br /><br /></li>
<li><strong>Enterprise</strong>: <br />Business is an enterprise of a person who generates an idea, bears the risk, produces new products or services and sell them to the consumers. The owner or entrepreneur generates the idea of business.<br /><br /></li>
<li><strong>Production and Distribution</strong>: <br />Business involves in production and distribution of goods and services. The production and distribution of goods and services are carried on to the satisfaction of the customers.<br /><br /></li>
<li><strong>Customer Satisfaction</strong>: <br />Every business activity is centered on customer service and their satisfaction. No business can exist over a long period of time without satisfying the needs and wants of the customers.<br /><br /></li>
<li><strong>Continuity in Dealing</strong>: <br />Business must be regular and continuous in its dealings. It must continuously and regularly produce and sell goods and services to customers. One time dealing cannot be termed as a business.<br /><br /></li>
<li><strong>Risk and Uncertainty</strong>: <br />Every business activity involves risk and uncertainty to some extent. The risk of loss is ever present in every business activity. Hence, there is no certainty that the business activity always results in profit.<br /><br /></li>
<li><strong>Profit Motive</strong>: <br />Profit is an essence of business. The activities relating to production and distribution of goods and services are carried on with the aim of earning profit.<br /><br /></li>
<li><strong>Finance or Capital</strong>: <br />Business needs some capital to acquire some production and distribution of goods and services can be produced and marketed thus Capital is said to be the lifeblood of business. No business ever can be started and successfully run without adequate finance.<br /><br /></li>
<li><strong>Ownership and Employment</strong>: <br />Every business is owned by an individual or a group of individuals. The owner contributes capital to start and run the business. Business may be sole trading, partnership, joint stock or a cooperative. Except sole trading, other forms of business need employees for the day to day activities.</li>
</ul>
</li>
</ul>
Q4:
Write differences between economic and non-economic business.
Type: Short Difficulty: Easy
Show/Hide Answer
Answer: <table width="480">
<tbody>
<tr>
<td>
<p><strong>Bases of difference</strong></p>
</td>
<td>
<p><strong>Economic Activities</strong></p>
</td>
<td>
<p><strong>Non-economic Activities</strong></p>
</td>
</tr>
<tr>
<td>
<p>Meaning</p>
</td>
<td>
<p>They are the activities which are performed for earning money.</p>
</td>
<td>
<p>They are the activities which are performed to satisfy social, emotional and psychological needs.</p>
</td>
</tr>
<tr>
<td>
<p>Propose</p>
</td>
<td>
<p>These are undertaken with an economic motive.</p>
</td>
<td>
<p>These are undertaken with a social or psychological needs.</p>
</td>
</tr>
<tr>
<td>
<p>Outcomes</p>
</td>
<td>
<p>These result in the production and distribution of goods and services.</p>
</td>
<td>
<p>These result in the personal satisfaction.</p>
</td>
</tr>
<tr>
<td>
<p>Measurement</p>
</td>
<td>
<p>These can be measured in terms of monetary income.</p>
</td>
<td>
<p>These are measured in terms of personal satisfaction.</p>
</td>
</tr>
</tbody>
</table>
<p> </p>
<tbody>
<tr>
<td>
<p><strong>Bases of difference</strong></p>
</td>
<td>
<p><strong>Economic Activities</strong></p>
</td>
<td>
<p><strong>Non-economic Activities</strong></p>
</td>
</tr>
<tr>
<td>
<p>Meaning</p>
</td>
<td>
<p>They are the activities which are performed for earning money.</p>
</td>
<td>
<p>They are the activities which are performed to satisfy social, emotional and psychological needs.</p>
</td>
</tr>
<tr>
<td>
<p>Propose</p>
</td>
<td>
<p>These are undertaken with an economic motive.</p>
</td>
<td>
<p>These are undertaken with a social or psychological needs.</p>
</td>
</tr>
<tr>
<td>
<p>Outcomes</p>
</td>
<td>
<p>These result in the production and distribution of goods and services.</p>
</td>
<td>
<p>These result in the personal satisfaction.</p>
</td>
</tr>
<tr>
<td>
<p>Measurement</p>
</td>
<td>
<p>These can be measured in terms of monetary income.</p>
</td>
<td>
<p>These are measured in terms of personal satisfaction.</p>
</td>
</tr>
</tbody>
</table>
<p> </p>
Q5:
What are the characteristics of business?
Type: Short Difficulty: Easy
Show/Hide Answer
Answer: <h4>Characteristics of Business</h4>
<ul>
<li><strong>Human Activity: </strong><br />Business is a human activity, No business can be performed without human efforts. The stakeholders of business such as workers, manager owner’s etc play an important part in the business.<br /><br /></li>
<li><strong>Economic activity</strong>: <br />It is an activity which involves in exchange of goods and services for money. It does not include non-economic activities which are not directed to generating income.<br /><br /></li>
<li><strong>Enterprise</strong>: <br />Business is an enterprise of a person who generates an idea, bears the risk, produces new products or services and sell them to the consumers. The owner or entrepreneur generates the idea of business.<br /><br /></li>
<li><strong>Production and distribution</strong>: <br />Business involves in production and distribution of goods and services. The production and distribution of goods and services are carried on to the satisfaction of the customers.<br /><br /></li>
<li><strong>Customer Satisfaction</strong>: <br />Every business activity is centered on customer service and their satisfaction. No business can exist over a long period of time without satisfying the needs and wants of the customers.<br /><br /></li>
<li><strong>Continuity in dealing</strong>: <br />Business must be regular and continuous in its dealings. It must continuously and regularly produce and sell goods and services to customers. One time dealing cannot be termed as a business.<br /><br /></li>
<li><strong>Risk and Uncertainty</strong>: <br />Every business activity involves risk and uncertainty to some extent. The risk of loss is ever present in every business activity. Hence, there is no certainty that the business activity always results in profit.<br /><br /></li>
<li><strong>Profit Motive</strong>: <br />Profit is an essence of business. The activities relating to production and distribution of goods and services are carried on with the aim of earning profit.<br /><br /></li>
<li><strong>Finance or capital</strong>: <br />Business needs some capital to acquire some production and distribution of goods and services can be produced and marketed thus Capital is said to be the lifeblood of business. No business ever can be started and successfully run without adequate finance.<br /><br /></li>
<li><strong>Ownership and Employment</strong>: <br />Every business is owned by an individual or a group of individuals. The owner contributes capital to start and run the business. Business may be sole trading, partnership, joint stock or a cooperative. Except sole trading, other forms of business need employees for the day to day activities.</li>
</ul>
<p> </p>
<ul>
<li><strong>Human Activity: </strong><br />Business is a human activity, No business can be performed without human efforts. The stakeholders of business such as workers, manager owner’s etc play an important part in the business.<br /><br /></li>
<li><strong>Economic activity</strong>: <br />It is an activity which involves in exchange of goods and services for money. It does not include non-economic activities which are not directed to generating income.<br /><br /></li>
<li><strong>Enterprise</strong>: <br />Business is an enterprise of a person who generates an idea, bears the risk, produces new products or services and sell them to the consumers. The owner or entrepreneur generates the idea of business.<br /><br /></li>
<li><strong>Production and distribution</strong>: <br />Business involves in production and distribution of goods and services. The production and distribution of goods and services are carried on to the satisfaction of the customers.<br /><br /></li>
<li><strong>Customer Satisfaction</strong>: <br />Every business activity is centered on customer service and their satisfaction. No business can exist over a long period of time without satisfying the needs and wants of the customers.<br /><br /></li>
<li><strong>Continuity in dealing</strong>: <br />Business must be regular and continuous in its dealings. It must continuously and regularly produce and sell goods and services to customers. One time dealing cannot be termed as a business.<br /><br /></li>
<li><strong>Risk and Uncertainty</strong>: <br />Every business activity involves risk and uncertainty to some extent. The risk of loss is ever present in every business activity. Hence, there is no certainty that the business activity always results in profit.<br /><br /></li>
<li><strong>Profit Motive</strong>: <br />Profit is an essence of business. The activities relating to production and distribution of goods and services are carried on with the aim of earning profit.<br /><br /></li>
<li><strong>Finance or capital</strong>: <br />Business needs some capital to acquire some production and distribution of goods and services can be produced and marketed thus Capital is said to be the lifeblood of business. No business ever can be started and successfully run without adequate finance.<br /><br /></li>
<li><strong>Ownership and Employment</strong>: <br />Every business is owned by an individual or a group of individuals. The owner contributes capital to start and run the business. Business may be sole trading, partnership, joint stock or a cooperative. Except sole trading, other forms of business need employees for the day to day activities.</li>
</ul>
<p> </p>
Q6:
What are the differences between economic and non-economic activities and explain about characteristics of business.
Type: Long Difficulty: Easy
Show/Hide Answer
Answer: <h4><strong>Differences Between economic and non-economic activities</strong></h4>
<table width="480">
<tbody>
<tr>
<td>
<p><strong>Bases of difference</strong></p>
</td>
<td>
<p><strong>Economic Activities</strong></p>
</td>
<td>
<p><strong>Non-economic Activities</strong></p>
</td>
</tr>
<tr>
<td>
<p>Meaning</p>
</td>
<td>
<p>They are the activities which are performed for earning money.</p>
</td>
<td>
<p>They are the activities which are performed to satisfy social, emotional and psychological needs.</p>
</td>
</tr>
<tr>
<td>
<p>Propose</p>
</td>
<td>
<p>These are undertaken with an economic motive.</p>
</td>
<td>
<p>These are undertaken with a social or psychological needs.</p>
</td>
</tr>
<tr>
<td>
<p>Outcomes</p>
</td>
<td>
<p>These result in the production and distribution of goods and services.</p>
</td>
<td>
<p>These result in the personal satisfaction.</p>
</td>
</tr>
<tr>
<td>
<p>Measurement</p>
</td>
<td>
<p>These can be measured in terms of monetary income.</p>
</td>
<td>
<p>These are measured in terms of personal satisfaction.</p>
</td>
</tr>
</tbody>
</table>
<p> </p>
<h4>Characteristics of Business</h4>
<ul>
<li><strong>Human Activity: </strong><br />Business is a human activity, No business can be performed without human efforts. The stakeholders of business such as workers, manager owner’s etc play an important part in the business.<br /><br /></li>
<li><strong>Economic activity</strong>: <br />It is an activity which involves in exchange of goods and services for money. It does not include non-economic activities which are not directed to generating income.<br /><br /></li>
<li><strong>Enterprise</strong>: <br />Business is an enterprise of a person who generates an idea, bears the risk, produces new products or services and sell them to the consumers. The owner or entrepreneur generates the idea of business.<br /><br /></li>
<li><strong>Production and distribution</strong>: <br />Business involves in production and distribution of goods and services. The production and distribution of goods and services are carried on to the satisfaction of the customers.<br /><br /></li>
<li><strong>Customer Satisfaction</strong>: <br />Every business activity is centered on customer service and their satisfaction. No business can exist over a long period of time without satisfying the needs and wants of the customers.<br /><br /></li>
<li><strong>Continuity in dealing</strong>: <br />Business must be regular and continuous in its dealings. It must continuously and regularly produce and sell goods and services to customers. One time dealing cannot be termed as a business.<br /><br /></li>
<li><strong>Risk and Uncertainty</strong>: <br />Every business activity involves risk and uncertainty to some extent. The risk of loss is ever present in every business activity. Hence, there is no certainty that the business activity always results in profit.<br /><br /></li>
<li><strong>Profit Motive</strong>: <br />Profit is an essence of business. The activities relating to production and distribution of goods and services are carried on with the aim of earning profit.<br /><br /></li>
<li><strong>Finance or capital</strong>: <br />Business needs some capital to acquire some production and distribution of goods and services can be produced and marketed thus Capital is said to be the lifeblood of business. No business ever can be started and successfully run without adequate finance.<br /><br /></li>
<li><strong>Ownership and Employment</strong>: <br />Every business is owned by an individual or a group of individuals. The owner contributes capital to start and run the business. Business may be sole trading, partnership, joint stock or a cooperative. Except sole trading, other forms of business need employees for the day to day activities.</li>
</ul>
<p> </p>
<table width="480">
<tbody>
<tr>
<td>
<p><strong>Bases of difference</strong></p>
</td>
<td>
<p><strong>Economic Activities</strong></p>
</td>
<td>
<p><strong>Non-economic Activities</strong></p>
</td>
</tr>
<tr>
<td>
<p>Meaning</p>
</td>
<td>
<p>They are the activities which are performed for earning money.</p>
</td>
<td>
<p>They are the activities which are performed to satisfy social, emotional and psychological needs.</p>
</td>
</tr>
<tr>
<td>
<p>Propose</p>
</td>
<td>
<p>These are undertaken with an economic motive.</p>
</td>
<td>
<p>These are undertaken with a social or psychological needs.</p>
</td>
</tr>
<tr>
<td>
<p>Outcomes</p>
</td>
<td>
<p>These result in the production and distribution of goods and services.</p>
</td>
<td>
<p>These result in the personal satisfaction.</p>
</td>
</tr>
<tr>
<td>
<p>Measurement</p>
</td>
<td>
<p>These can be measured in terms of monetary income.</p>
</td>
<td>
<p>These are measured in terms of personal satisfaction.</p>
</td>
</tr>
</tbody>
</table>
<p> </p>
<h4>Characteristics of Business</h4>
<ul>
<li><strong>Human Activity: </strong><br />Business is a human activity, No business can be performed without human efforts. The stakeholders of business such as workers, manager owner’s etc play an important part in the business.<br /><br /></li>
<li><strong>Economic activity</strong>: <br />It is an activity which involves in exchange of goods and services for money. It does not include non-economic activities which are not directed to generating income.<br /><br /></li>
<li><strong>Enterprise</strong>: <br />Business is an enterprise of a person who generates an idea, bears the risk, produces new products or services and sell them to the consumers. The owner or entrepreneur generates the idea of business.<br /><br /></li>
<li><strong>Production and distribution</strong>: <br />Business involves in production and distribution of goods and services. The production and distribution of goods and services are carried on to the satisfaction of the customers.<br /><br /></li>
<li><strong>Customer Satisfaction</strong>: <br />Every business activity is centered on customer service and their satisfaction. No business can exist over a long period of time without satisfying the needs and wants of the customers.<br /><br /></li>
<li><strong>Continuity in dealing</strong>: <br />Business must be regular and continuous in its dealings. It must continuously and regularly produce and sell goods and services to customers. One time dealing cannot be termed as a business.<br /><br /></li>
<li><strong>Risk and Uncertainty</strong>: <br />Every business activity involves risk and uncertainty to some extent. The risk of loss is ever present in every business activity. Hence, there is no certainty that the business activity always results in profit.<br /><br /></li>
<li><strong>Profit Motive</strong>: <br />Profit is an essence of business. The activities relating to production and distribution of goods and services are carried on with the aim of earning profit.<br /><br /></li>
<li><strong>Finance or capital</strong>: <br />Business needs some capital to acquire some production and distribution of goods and services can be produced and marketed thus Capital is said to be the lifeblood of business. No business ever can be started and successfully run without adequate finance.<br /><br /></li>
<li><strong>Ownership and Employment</strong>: <br />Every business is owned by an individual or a group of individuals. The owner contributes capital to start and run the business. Business may be sole trading, partnership, joint stock or a cooperative. Except sole trading, other forms of business need employees for the day to day activities.</li>
</ul>
<p> </p>
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Operating System
The computer system is a collection of different hardware components. So we need software that could perform the basic tasks such as recognizing input from the input devices, sending output to the output devices, keeping tracks of files and directories on the disk and control computer peripheral devices like mouse, printer, scanners etc. An OS is a collection of system program that controls the operations of the computer system. It activates and recognizes the hardware devices and provides the operating environment for other application software. It acts as the intermediary between a user and the computer hardware. It has major two objectives, first is to activate the hardware devices and other is to provide an interactive interface to the user and interpret commands so that it can communicate with the hardware. Example UNIX, MS-DOS, MS-Windows, Linux etc.
Functions of Operating System
- File and folder management
- Device management
- Memory management
- Security management
- Help to run application software for user
- Process and management
Types of Operating System
Operating system are categorized into different types on the basis of mode of use and user.
Based on mode of user, operating system are classified into two types:
- Single user operating system: This is the type of computer system which is mostly used in desktop and laptop. It generally provides a simple computer system, which facilitates the running of a variety of software packages as well as it allows users to develop and execute programs of their own.
- Multi-user operating system: The multi-user operating system allows concurrent access by multiple users of a computer. It allows many different users to take advantage of the computer resources simultaneously. It is often used in business and offices where different users need to access the same resources, but these resources cannot be installed on every system.
We can classify the operating system on the basis user interface like command or character user interface operating system and graphical user interface operating system.
1. Command or Character-based User Interface (CUI)
CUI is a traditional user interface. It provides the interactive terminal where a user could enter the command to interpret. It was the only common place to communicate between a program and its user. Now a day also, we are using this command based interface.
2. Graphical User Interface (GUI)
With the advancement of technology, the computer system has become quicker and cheaper. Operating environment has also changed. This lead the development of graphical user interface where users can interact with the computer using picture and graphs, rather than character and commands. It displays the icon, buttons, dialog box etc. Popular GUI is Microsoft Windows.
Lesson
Operating System : MS-DOS and MS-WINDOWS
Subject
Computer
Grade
Grade 8
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