90 Days Basic Computer Learning Series | Day 1
Have you ever wondered how computers work, how students prepare assignments on a computer, or how office employees create documents, spreadsheets, and presentations?
Welcome to Day 1 of our 90 Days Basic Computer Learning Series! In this series, we will learn computer fundamentals, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, internet basics, typing skills, and other essential digital skills in simple language.
You do not need any previous computer knowledge to get started. This course is designed for students, beginners, job seekers, and anyone who wants to learn computers from scratch.
1. What Is a Computer?
A computer is an electronic device that accepts data, processes it according to instructions, stores information, and produces results.
In simple words, a computer helps us perform tasks quickly and accurately, such as writing documents, calculating numbers, creating presentations, browsing the internet, and storing information.
Example: When you type your name into a document, the computer accepts your input, processes your keyboard commands, and displays your name on the screen.
2. What Are the Main Uses of a Computer?
Computers are used in almost every field of modern life.
- Education: Preparing assignments, attending online classes, and conducting research.
- Office work: Creating reports, letters, records, and presentations.
- Banking: Managing accounts, processing transactions, and maintaining financial records.
- Business: Managing customers, inventory, billing, and sales.
- Communication: Sending emails, making video calls, and exchanging information.
- Healthcare: Maintaining patient records and supporting medical services.
- Entertainment: Watching videos, listening to music, and playing games.
Learning basic computer skills can help students become more confident and prepare for future educational and employment opportunities.
3. What Are the Main Parts of a Computer?
A desktop computer setup commonly includes the following components.
1. Monitor
The monitor displays information such as text, pictures, videos, and applications. It works like a screen through which you see the computer’s output.
2. Keyboard
The keyboard is an input device used to type letters, numbers, symbols, and commands.
Common keys include:
- Enter
- Spacebar
- Backspace
- Delete
- Shift
- Ctrl
- Alt
- Function keys (F1–F12)
3. Mouse
A mouse is a pointing device that helps you select items, open programs, move objects, and interact with the computer.
Basic mouse actions include:
- Single-click: Select an item.
- Double-click: Open many desktop icons or files.
- Right-click: Display a context menu.
- Scroll: Move through a page or document.
4. CPU and System Unit
The CPU, or Central Processing Unit, executes instructions and performs calculations. It is often called the brain of the computer.
The CPU is a component inside the computer, not the entire desktop cabinet. The system unit typically contains the processor, memory, storage, and other internal components.
5. Speakers and Headphones
These are output devices used to listen to music, videos, online classes, and other audio.
6. Printer
A printer produces a physical copy of a document or image on paper. This is commonly called a hard copy.
4. What Are Input and Output Devices?
Understanding input and output devices is one of the most important computer basics.
Input devices send data or instructions to a computer.
Examples:
- Keyboard
- Mouse
- Microphone
- Scanner
- Webcam
Output devices present the results of computer processing.
Examples:
- Monitor
- Printer
- Speakers
- Headphones
Some devices, such as a touchscreen, can perform both input and output functions.
5. What Is Hardware and Software?
A computer system has two important components: hardware and software.
Hardware
Hardware refers to the physical parts of a computer that you can touch.
Examples include:
- Monitor
- Keyboard
- Mouse
- Processor
- RAM
- Hard disk or SSD
Software
Software refers to programs and instructions that tell a computer what to do.
Examples include:
- Microsoft Word
- Microsoft Excel
- Microsoft PowerPoint
- Google Chrome
- Windows
Easy way to remember:
Hardware is the physical equipment, while software is the set of programs that runs on the equipment.
For example, a keyboard is hardware, while Microsoft Word is software.
6. What Is an Operating System?
An operating system, or OS, is system software that manages computer hardware and provides a platform for applications to run.
Popular operating systems include:
- Microsoft Windows
- macOS
- Linux
- Android
- iOS
Windows is widely used on personal computers. It allows users to open programs, manage files, connect devices, and adjust computer settings.
Without an operating system, using a typical personal computer would be much more difficult.
7. What Is Microsoft Office?
Microsoft Office is a familiar name for Microsoft’s productivity applications. The current Microsoft 365 offering includes Word, Excel, PowerPoint, and other apps, depending on the plan.
In this series, we will focus on three important applications.
Microsoft Word
Word is used to create and edit text documents.
Common uses:
- Writing letters
- Preparing school assignments
- Creating resumes
- Making reports
- Formatting text and paragraphs
Microsoft Excel
Excel is used to organize data in rows and columns, perform calculations, and analyze information.
Common uses:
- Preparing student marksheets
- Creating budgets
- Calculating totals and averages
- Maintaining attendance records
- Creating charts
Microsoft PowerPoint
PowerPoint is used to create slide-based presentations.
Common uses:
- School and college projects
- Classroom teaching
- Business meetings
- Training sessions
- Project presentations
During the coming days, we will learn these applications through simple explanations, practical examples, and exercises.
8. What Is the Difference Between Data and Information?
Data consists of raw facts, figures, or observations.
Information is data that has been organized or processed to make it meaningful.
Example:
A student’s marks are 70, 80, and 90. These numbers are data.
When we calculate the total as 240 and the average as 80, the results become useful information.
Microsoft Excel helps users turn raw data into meaningful information.
9. What Is the Difference Between RAM and Storage?
RAM and storage are both important, but they perform different functions.
RAM (Random Access Memory):
- Temporarily holds data and instructions that the computer is actively using.
- Helps applications work smoothly.
- Usually loses its contents when the computer is switched off.
Storage (SSD or HDD):
- Stores files, applications, and other data for long-term use.
- Keeps saved information when the computer is switched off.
For example, when you open a Word document, the computer uses RAM while you work. When you save the document to an SSD or hard drive, the file remains available for future use.
10. Basic Computer Terms Every Beginner Should Know
| Term | Simple meaning |
|---|---|
| Desktop | The main workspace shown after signing in to a desktop operating system |
| Icon | A small graphical symbol representing an application, file, or function |
| File | A named collection of data, such as a document or image |
| Folder | A container used to organize files and other folders |
| Software | Programs and instructions used by a computer |
| Hardware | The physical components of a computer |
| Internet | A global network connecting computers and other devices |
| Browser | Software used to access websites |
| Download | Receiving data or files from another system |
| Upload | Sending data or files to another system |
| Save | Storing your work so you can access it later |
| Restart | Turning a computer off and starting it again through a restart command |
11. Practical Activity for Day 1
Reading about computers is helpful, but practising is even better.
Complete these beginner-friendly tasks on a computer if one is available.
Task 1: Identify computer components
- Find the monitor, keyboard, mouse, and system unit.
- Identify at least two input devices and two output devices.
Task 2: Explore the desktop
- Start the computer and sign in if required.
- Identify the desktop, taskbar, and Start menu on Windows.
- Find the applications menu or search feature.
Task 3: Open an application
- Open a simple text editor, such as Notepad on Windows.
- Type your name, today’s date, and five sentences about yourself.
- Save the file with the name
Day1_Practice.txtin a folder you can find again.
Task 4: Review what you learned
- Explain the difference between hardware and software.
- Name three uses of computers.
- Identify the CPU, RAM, and storage in simple terms.
If you do not have access to a computer today, you can write your answers in a notebook and complete the practical tasks later.
12. Day 1 Computer Basics Quiz
Test your understanding before moving to Day 2.
Q1. Which of the following is an input device?
A. Monitor
B. Keyboard
C. Speaker
D. Printer
Q2. Which application is commonly used to create text documents?
A. Microsoft Word
B. Microsoft Excel
C. Microsoft PowerPoint
D. Calculator
Q3. What does CPU stand for?
A. Computer Processing Utility
B. Central Program Unit
C. Central Processing Unit
D. Control Processing User
Q4. Which of the following is an operating system?
A. Microsoft Word
B. Windows
C. Microsoft Excel
D. PowerPoint
Q5. Which component temporarily holds data that the computer is actively using?
A. Printer
B. Monitor
C. RAM
D. Keyboard
Quiz Answers
- B — Keyboard
- A — Microsoft Word
- C — Central Processing Unit
- B — Windows
- C — RAM
Conclusion
Congratulations! You have completed Day 1 of the 90 Days Basic Computer Learning Series.
Today, you learned what a computer is, its uses, the main computer components, input and output devices, hardware and software, operating systems, Microsoft Office applications, and other essential computer terms.
Remember, you do not need to learn everything in one day. Consistent practice and curiosity will help you improve.
Your Day 1 homework: Identify five computer components, learn five basic computer terms, and complete the quiz.
In Day 2, we will learn about starting and shutting down a computer, understanding the Windows desktop, using the Start menu, and opening applications.
Keep practising, stay curious, and continue learning!
Follow the 90 Days Basic Computer Learning Series for more beginner-friendly lessons.