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Saeed Digital Skills University, Bajaur, bajaur (2026)

11/09/2026

InterLink Daily Task 78 — More Ways to Participate & Use the Ecosystem!

The InterLink ecosystem continues to expand with new features, campaigns, and practical use cases across its dApps. 🚀

🔹 Bitflip — Ultimate Trader Challenge
The Ultimate Trader Challenge is now live! Traders can test their skills and compete for rewards of up to 100 ITL. It adds a more engaging and competitive experience for Bitflip users. 🎯

🔹 INS — Early User Rewards
INS is preparing special early-launch activities, including discounted names during the first days. Users will also have opportunities to earn rewards by purchasing a name and completing their INS profile. 🌐

🔹 ATV — Easier Payment Transactions
ATV is working on payment-based transaction submission, allowing payments and related submissions to be connected more conveniently, reducing manual steps for users. ⚡

🔹 LinkersMap — Better Merchant Tools
Merchants will have more flexibility to configure shipping fees and service areas. Smart contract-based payment logic is also being developed to make transactions safer and more practical for real-world commerce. 🛍️🔐

These developments show how InterLink is building more ways for Linkers to participate, interact, trade, and use blockchain in practical ways. 💜

08/09/2026

I have a professional Graphics Designer

07/09/2026

I have a professional Graphics Designer if you need to contact me on messenger

23/08/2026

Lecture 5: Operating Systems Introduction

Course: Complete IT Professional Course — Basic to Advanced
Lecture: 5 of 100

---

💻 Introduction to Operating Systems

Assalam-o-Alaikum and welcome, students!

Welcome to Lecture Number 5: Operating Systems Introduction.

In our previous lectures, we learned about computer basics, computer hardware, and computer software. Today, we will learn about one of the most important types of system software: the Operating System, also known as OS.

What is an Operating System?

Definition:

«An Operating System is system software that manages computer hardware and software resources and allows users to interact with a computer.»

In simple words, an Operating System controls the basic activities of a computer. It acts as a bridge between the user, the software, and the hardware.

Without an Operating System, it would be very difficult for us to use a computer, laptop, or smartphone.

Some common examples of Operating Systems are:

- Windows
- Linux
- macOS
- Android

---

💻 Windows Operating System

Let's start with the Windows Operating System.

Windows is one of the most popular Operating Systems in the world. It is mainly used on desktop computers and laptops.

Windows is developed by Microsoft.

Some popular versions of Windows include:

- Windows XP
- Windows 7
- Windows 8
- Windows 10
- Windows 11

Windows is popular because it has a user-friendly interface. Users can easily work with:

- Files
- Folders
- Applications
- Icons
- The Start Menu
- The Taskbar

For example, when you turn on a computer and see the Desktop, icons, Start Menu, and Taskbar, you are using the Windows Operating System.

Windows is widely used in homes, schools, offices, and businesses.

---

💻 Linux Operating System

Now let's learn about Linux.

Linux is another popular Operating System. It is especially popular among:

- Programmers
- Developers
- IT professionals
- Cybersecurity professionals
- Server administrators

One important feature of Linux is that it is open-source.

Open-source means that the source code is available for developers to study, modify, and improve.

There are many different versions of Linux, known as Linux distributions.

Some popular Linux distributions are:

- Ubuntu
- Debian
- Fedora
- Kali Linux

Linux is known for its security, stability, and flexibility.

It is also widely used on servers and in the field of cybersecurity.

---

💻 macOS

The next Operating System is macOS.

macOS is the Operating System developed by Apple for its computers.

Apple devices such as:

- MacBook
- iMac
- Mac Mini

use macOS.

macOS is known for its:

- Professional design
- High performance
- Strong security
- Easy integration with other Apple devices

Unlike Windows, which can be installed on computers from many different manufacturers, macOS is mainly designed to work with Apple's Mac computers.

macOS is commonly used by professionals, designers, video editors, programmers, and other users who prefer the Apple ecosystem.

---

💻 Android Operating System

Now let's talk about Android.

Android is one of the most widely used Operating Systems for smartphones and tablets.

Many mobile phone companies use Android, including:

- Samsung
- Xiaomi
- Oppo
- Vivo
- OnePlus

Android allows us to perform many tasks on our mobile devices, such as:

- Making phone calls
- Sending messages
- Using applications
- Browsing the internet
- Playing games
- Watching videos
- Taking photographs
- Managing files

When you open an application, change your mobile settings, or use your phone's camera, the Android Operating System helps manage these activities.

Android is developed as a platform by Google and is used on billions of devices worldwide.

---

💻 Functions of an Operating System

Now that we know about different Operating Systems, let's discuss the important functions of an Operating System.

1. Device Management

The Operating System manages hardware devices connected to the computer.

These devices include:

- Keyboard
- Mouse
- Printer
- Monitor
- Hard Disk
- Speakers

The Operating System makes sure that these devices work properly with the computer.

---

💻 Memory Management

An Operating System manages the computer's memory, especially RAM.

When you open different applications at the same time, the Operating System decides how much memory each program should use.

For example, if you are using a web browser, Microsoft Word, and a video player at the same time, the Operating System manages the available memory between these programs.

---

💻 File Management

The Operating System helps users manage files and folders.

Using an Operating System, we can:

- Create files
- Open files
- Save files
- Copy files
- Move files
- Rename files
- Delete files
- Create folders

File management is an important function because it helps us organize our data properly.

---

💻 Application Management

The Operating System helps applications and programs run on a device.

Examples of applications include:

- Microsoft Word
- Google Chrome
- Adobe Photoshop
- Video games

The Operating System loads, runs, and manages these applications.

---

💻 User Interface

The Operating System provides a way for users to interact with a computer or mobile device.

This is called the User Interface.

For example, we interact with Windows through:

- Icons
- Menus
- Buttons
- Windows

On smartphones, we interact through:

- Touchscreens
- Applications
- Settings
- Icons

The user interface makes technology easier for people to use.

---

💻 Security

Another important function of an Operating System is security.

Operating Systems help protect devices and data through features such as:

- Passwords
- User accounts
- Permissions
- Security updates
- Access control

These features help prevent unauthorized people from accessing important information.

---

💻 Lecture Summary

Let's summarize what we learned today.

Today, we learned:

- What an Operating System is
- Windows Operating System
- Linux Operating System
- macOS
- Android
- The major functions of an Operating System

Important Point to Remember

«Hardware is the physical part of a computer, software gives instructions, and the Operating System manages the hardware and software so that the computer can work properly.»

---

20/08/2026

📱🚫 Mobile Me Ads Kaise Off Kare?

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Saeed Digital Skills University

20/08/2026

What is a Computer? Full Form of Computer Explained! 🖥️❓

Ever wondered what the word COMPUTER actually stands for? It is much more than just an electronic device used to store and process information! The word comes from compute, meaning to calculate. But did you know it also has a full form?
Here is what C-O-M-P-U-T-E-R stands for:
C - Commonly
O - Operated
M - Machine
P - Particularly
U - Used
T - Technical
E - Educational
R - Research
Commonly Operated Machine Particularly Used in Technical and Educational Research.
Share this fun tech fact with your friends and students! 💡 Let us know in the comments: Did you know this full form before?

20/08/2026

🎉 Alhamdulillah! 10K Followers Celebration | FREE Design Services for 24 Hours 🔥

🎉 Alhamdulillah! We have officially completed 10,000 Followers on Facebook! ❤️

This amazing milestone would not have been possible without your love, support, and trust. Thank you for being a valuable part of the Saeed Digital Skills University family! 🙏✨

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20/08/2026

Lecture 4: Computer Software Fundamentals

Course: Complete IT Professional Course — Basic to Advanced
Lecture: 4 of 100

---

💻 What is Software?

Welcome to Lecture 4: Computer Software Fundamentals.

In the previous lecture, we learned about computer hardware, which means the physical parts of a computer that we can see and touch.

Today, we will learn about software.

Definition of Software

Software is a collection of programs and instructions that tells a computer what to do.

In simple words:

> Hardware is the physical part of a computer, while software is the set of programs that make the hardware useful.

Examples of Software

Microsoft Word

Google Chrome

Windows

Android

Photoshop

VLC Media Player

Mobile applications

You cannot physically touch software, but you can use it through a computer, laptop, tablet, or smartphone.

---

💻Types of Software

Software is commonly divided into different categories. The two major categories are:

1. System Software

System software helps operate and control the computer hardware.

It provides a platform for other software and applications to run.

Examples

Windows

Linux

Android

Device drivers

The most important example of system software is the Operating System.

---

2. Application Software

Application software is designed to help users perform specific tasks.

Examples

Microsoft Word — for writing documents

Microsoft Excel — for calculations and spreadsheets

Google Chrome — for browsing the internet

Photoshop — for image editing

WhatsApp — for communication

VLC — for playing videos and audio

Easy Example

Think of a smartphone:

Android is system software.

WhatsApp, YouTube, and other apps are application software.

---

💻 Operating System

What is an Operating System?

An Operating System, or OS, is the main system software that manages the computer's hardware and software resources.

The operating system acts as a bridge between:

User ↔ Software ↔ Hardware

Main Functions of an Operating System

An operating system helps to:

Manage hardware

Run applications

Manage files and folders

Control memory

Manage users

Control input and output devices

Provide security

Common Operating Systems

For Computers:

Microsoft Windows

Linux

macOS

For Mobile Devices:

Android

iOS

Example

When you turn on a computer, the operating system starts and allows you to open programs, access files, use devices, and perform different tasks.

Without an operating system, using a modern general-purpose computer would be much more difficult.

---

💻 Utility Software

What is Utility Software?

Utility software is designed to help maintain, manage, protect, or improve the performance of a computer system.

Common Types of Utility Software

Antivirus Software

Helps detect and protect against malicious software.

Backup Software

Helps create copies of important files.

Disk Cleanup Tools

Help remove unnecessary temporary files.

File Compression Software

Helps reduce file sizes and package files.

Examples include tools that create compressed archives.

Importance of Utility Software

Utility programs can help users:

Maintain computer systems

Protect data

Manage files

Improve storage management

Create backups

---

💻 Software Installation

What is Software Installation?

Software installation is the process of adding a program or application to a computer or device so that it can be used.

Basic Installation Process

1. Obtain the software from a trusted source.

2. Check the system requirements.

3. Run the installer or installation process.

4. Follow the instructions.

5. Complete the installation.

6. Open the software.

Important Safety Tip

Always try to download and install software from:

Official websites

Official app stores

Trusted sources

Avoid downloading unknown or suspicious software because it may contain malware or unwanted programs.

Updating Software

Software developers release updates to:

Fix bugs

Improve features

Improve performance

Address security issues

Keeping important software updated is generally a good security practice.

---

💻 Hardware vs Software

Let's quickly compare hardware and software.

Hardware Software

Physical components Programs and instructions
Can usually be touched Cannot be physically touched
Keyboard Microsoft Word
Monitor Windows
CPU Web Browser
SSD Mobile Application

Simple Example

A computer is like a car.

The physical parts of the car are similar to hardware.

The instructions and programs that control operations are similar to software.

Both hardware and software are important for a computer system to perform useful tasks.

---

💻 Quick Revision & Practical Activity

Today's Quick Revision

Today, we learned:

Software

Programs and instructions used by a computer.

System Software

Software that helps manage and operate computer hardware.

Application Software

Software designed to perform specific user tasks.

Operating System

The main software that manages hardware, applications, files, and system resources.

Utility Software

Software used to maintain, protect, and manage a computer system.

Software Installation

The process of adding software to a computer or device.

---

🎁 Assignment

Create a list of 10 software programs or applications you use and divide them into:

System Software

Application Software

Utility Software

Key Takeaway

> Hardware is the physical part of a computer, while software provides the instructions and programs that allow the hardware to perform useful tasks.

19/08/2026

🎉 10,000 FOLLOWERS COMPLETED! 🎉

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19/08/2026

Lecture 3: Computer Hardware Components

Course: Complete IT Professional Course — Basic to Advanced
Lecture: 3 of 100

💻 Learning Objectives

By the end of this lecture, students will be able to:

Explain what computer hardware is.

Understand the function of the CPU.

Explain RAM and its importance.

Understand Hard Disk and SSD.

Identify the motherboard and its major functions.

Differentiate between input and output devices.

Identify common storage devices.

---

💻 Introduction to Computer Hardware

In the previous lecture, we learned that hardware means the physical components of a computer that we can see and touch.

Examples include:

Keyboard

Mouse

Monitor

CPU

RAM

Motherboard

SSD

Printer

Today, we will learn about the most important computer hardware components.

A computer needs different hardware components to:

Input → Process → Store → Output

Each component has a specific job.

---

💻 CPU: Central Processing Unit

Let's start with one of the most important components:

What is a CPU?

CPU stands for Central Processing Unit.

The CPU is often called the "brain of the computer" because it executes instructions and performs calculations.

When you open an application, calculate a number, or perform a task, the CPU processes instructions that allow the computer to perform that task.

Main Functions of CPU

The CPU:

Processes instructions

Performs calculations

Controls computer operations

Coordinates different components

Simple Example

Imagine you open a calculator and enter:

100 + 50

The computer receives your input and the CPU processes the instructions.

The result is:

150

CPU Speed

CPU performance is commonly associated with its clock speed, measured in Hertz (Hz), such as:

MHz

GHz

Modern CPUs also have multiple cores.

For example:

Dual-core = 2 cores

Quad-core = 4 cores

Octa-core = 8 cores

Multiple cores allow a processor to handle multiple tasks more efficiently.

---

💻 RAM: Random Access Memory

What is RAM?

RAM stands for Random Access Memory.

RAM is the computer's temporary working memory.

When you open programs, files, or websites, the computer may load the information it needs into RAM so the CPU can access it quickly.

Important Point

RAM is volatile memory.

This means that its contents are generally lost when the computer is powered off.

Example

Suppose you open:

Web browser

Microsoft Word

Music player

These applications use RAM while they are running.

RAM Capacity

RAM is usually measured in:

GB — Gigabytes

Sometimes TB — Terabytes for larger systems

Examples:

4 GB, 8 GB, 16 GB, 32 GB

Generally, having more suitable RAM allows a computer to handle more applications and tasks simultaneously, although performance also depends on the CPU, storage, and software.

Simple Difference

RAM = Temporary working space

Storage = Long-term data storage

---

💻 Hard Disk and SSD

Now let's discuss storage.

Hard Disk Drive — HDD

A Hard Disk Drive (HDD) is a storage device that uses magnetic disks to store data.

It can store:

Documents

Photos

Videos

Applications

Operating systems

HDDs are available in different capacities.

Advantages of HDD

Large storage capacity

Usually lower cost per GB

Useful for storing large amounts of data

---

Solid State Drive — SSD

An SSD, or Solid State Drive, is a storage device that uses flash memory instead of spinning magnetic disks.

SSDs are generally much faster than traditional HDDs.

Advantages of SSD

Faster boot times

Faster application loading

No spinning disks

Generally quieter

Better responsiveness

HDD vs SSD

HDD SSD

Uses spinning magnetic disks Uses flash memory
Generally slower Generally faster
Mechanical components No moving storage parts
Often cheaper per GB Usually more expensive per GB

Simple Example

If a computer takes a long time to start, replacing an old HDD with an SSD can significantly improve its responsiveness.

---

💻 Motherboard

What is a Motherboard?

The motherboard is the main circuit board of a computer.

It allows important components to communicate with each other.

Components connected to the motherboard can include:

CPU

RAM

Storage devices

Graphics hardware

Expansion cards

USB devices

Think of the motherboard as the main communication platform of the computer.

Simple Example

Imagine a school.

The motherboard is like the main campus that connects different departments.

The CPU, RAM, storage, and other components communicate through the motherboard.

Without a suitable motherboard, the major components cannot work together as a complete computer system.

---

💻 Input Devices

What is an Input Device?

An input device allows a user to send data or instructions to a computer.

Common Input Devices

Keyboard: Used to enter text, numbers, and commands.

Mouse: Used to point, select, click, and interact with graphical interfaces.

Microphone: Sends audio into the computer.

We**am: Captures images and video.

Scanner: Converts physical documents or images into digital form.

Touchscreen: Allows users to interact by touching the display.

Example

When you type your name using a keyboard:

Keyboard → Computer

The keyboard is providing input.

---

💻 Output Devices

What is an Output Device?

An output device presents processed information from a computer to the user.

Common Output Devices

Monitor: Displays text, images, and videos.

Printer: Produces information on paper.

Speakers: Produce sound.

Headphones: Provide audio output to the user.

Projector: Displays computer content on a large screen.

Example

When you type something on a keyboard and see it appear on the monitor:

Keyboard → Computer → Monitor

Keyboard provides input, while the monitor provides output.

---

💻 Storage Devices

Storage devices are used to save data for future use.

Common storage devices include:

1. HDD

Traditional magnetic storage.

2. SSD

Fast flash-based storage.

3. USB Flash Drive

Small portable storage device.

4. Memory Card

Commonly used in smartphones, cameras, and other devices.

5. External Drive

Used for additional storage and backups.

6. Optical Disc

Examples include CDs and DVDs, although they are less commonly used today.

Cloud Storage

Cloud storage is another way to store files using remote servers accessed through the internet.

Examples include online file storage services.

---

💻 Quick Revision & Practical Activity

Let's quickly review today's lesson.

CPU

Processes instructions and performs calculations.

RAM

Provides temporary working memory for running programs.

HDD/SSD

Provides long-term storage for files and software.

Motherboard

Connects major computer components and allows them to communicate.

Input Devices

Send data to the computer.

Examples: keyboard, mouse, microphone.

Output Devices

Present information from the computer.

Examples: monitor, printer, speakers.

Storage Devices

Save data for future use.

Examples: HDD, SSD, USB drive, memory card.

💻 Homework

Write the names of 10 computer hardware components and explain the function of each in one sentence.

Key Takeaway

> CPU processes, RAM provides temporary working space, storage saves data, the motherboard connects components, input devices send information to the computer, and output devices present information to the user.

Saeed Digital Skills University

11/09/2026

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