Computer Knowledge Books

🖥️ Notepad Keyboard Shortcuts 📂 File Operations Ctrl + N  → New document Ctrl + O  → Open file Ctrl + S  → Save file F12  → Save As Ctrl + P  → Print Alt + F4  → Exit Notepad ✂️ Editing & Text Control Ctrl + Z  → Undo Ctrl + Y  → Redo Ctrl + X  → Cut Ctrl + C  → Copy Ctrl + V  → Paste Ctrl + A  → Select all Delete  → Delete selected text 🔍 Search & Replace Ctrl + F  → Find F3  → Find next Shift + F3  → Find previous Ctrl + H  → Replace Ctrl + G  → Go to line 📜 Formatting & View F5  → Insert date/time Ctrl + +  → Zoom in Ctrl + -  → Zoom out Ctrl + Mouse Scroll  → Zoom in/out Alt + Space  → Window menu F1  → Help 🧭 Navigation Arrow Keys  → Move cursor Home  → ...

🖥️ Windows Shortcut Keys 🔑 General & File Management Ctrl + C → Copy Ctrl + X → Cut Ctrl + V → Paste Ctrl + Z → Undo Ctrl + Y → Redo Ctrl + A → Select all Ctrl + S → Save Ctrl + N → New window/document Ctrl + O → Open file Ctrl + W → Close current window/tab   🌐 Web & Browsing Ctrl + T → New tab Ctrl + Shift + T → Reopen last closed tab Ctrl + L → Focus address bar Ctrl + F → Find text on page Ctrl + H → Open history Ctrl + Shift + N → Open incognito/private window 📂 System & Navigation Alt + Tab → Switch between open apps Alt + F4 → Close current app/window Windows Key + D → Show desktop Windows Key + E → Open File Explorer Windows Key + L → Lock computer Windows Key + R → Open Run dialog Windows Key + I → Open Settings Windows Key + Tab → Task View (virtual desktops)   📝 Text Editing (Office/Wordpad/Notepad) Ctrl + B → Bold Ctrl + I → Italic Ctrl + U → Underline Ctrl + K → Insert hyperl...

  📘 Lesson 2: Operating System & Windows Basics 2.1 What is an Operating System (OS)? An Operating System (OS) is the main software that manages the computer’s hardware and software resources. It acts as a bridge between the user and the computer. Functions of OS : Starts the computer (booting process). Provides a user interface (Desktop, Icons , Menus). Manages files and folders. Runs applications like MS Word , Excel , Paint . Controls devices (keyboard, mouse, printer). 👉 Example: Without Windows , you cannot open MS Word or Paint. 2.2 Windows Interface When you switch on your computer, the first screen you see is the Windows Desktop . (A) Desktop Background screen of Windows. Contains Icons (small pictures representing files, folders, or programs). Example: Recycle Bin , My Computer, MS Word shortcut. (B) Icons File Icon : Represents a document or image. Folder Icon :...

  📘 Lesson 1: Introduction to Computers 1.1 What is a Computer? A computer is an electronic machine that accepts data (input), processes it, and produces meaningful information (output). It can also store information for future use. Input : Data entered into the computer (keyboard, mouse, scanner ). Process : The computer works on the data using software and hardware. Output : Results shown on screen, printed on paper, or saved in files. Storage : Information saved in memory (hard disk, pen drive , cloud ). 👉 Example: When you type a letter in MS Word and print it, typing is input, formatting is processing, printed paper is output, and saved file is storage. 1.2 Components of a Computer (A) Hardware Physical parts of the computer that you can touch. Monitor : Displays output. Keyboard : Used for typing. Mouse : Used for pointing and clicking. CPU (Central Processing Unit) : Brain of the computer. Print...

📘 Computer Basics for Beginners A Practical Guide to Notepad, WordPad, Paint, MS Word, MS Excel, and More Chapter 1: Introduction to Computers Definition of Computer : An electronic device that processes data into information. Basic Components : Hardware : Monitor, Keyboard, Mouse, CPU, Printer. Software : Programs like MS Word, Excel, Paint. Functions of Computer : Input → Process → Output → Storage. Types of Computers : Desktop, Laptop, Tablet, Smartphone. Chapter 2: Operating System & Windows Basics What is an Operating System (OS)? Windows Interface : Desktop, Icons, Taskbar, Start Menu. File Management : Create, Rename, Delete files. Copy & Paste. Shortcut Keys (Ctrl + C, Ctrl + V, Ctrl + Z). Practical Exercise : Create a folder named “My Practice” and save files inside. Chapter 3: Notepad Introduction : Simple text editor. Feature...