💻 JST Computer Science: Mukammal Notes (Roman Urdu) 12 MCQs – Full Syllabus
✅ Har topic ko subtopics mein divide kiya gaya hai. Har concept Roman Urdu mein aasan lafzon, real life examples aur exam-focused tashreeh ke saath. Introduction se lekar Database tak – complete coverage.
📑 Computer Science ke tamam topics – Subtopics ke saath
1. Introduction to Computers
2. Types of Computers
3. Generations of Computers
4. Operating System
5. MS Office (Word, Excel, PowerPoint)
6. Computer Networking
7. Web Development Basics
8. Cyber Attacks & Ethical Hacking
9. Database Management System
🖥️ 1. Introduction to Computers – Subtopics
Computer kya hai? Electronic device jo data input leta hai, process karta hai, aur output deta hai. IPOS Cycle: Input → Process → Output → Storage.
🔹 Hardware: Physical parts (CPU, Monitor, Keyboard, Mouse).
🔹 Software: Programs aur instructions (Windows, MS Office, Games).
🔹 Data vs Information: Data raw facts (50, Ahmed), Information processed data (Ahmed ki age 50 hai).
🔹 CPU (Central Processing Unit): Brain of computer – Control Unit, ALU (Arithmetic Logic Unit), Registers.
📌 Real Life: ATM machine, smartphone, laptop sab computer hain.
📟 2. Types of Computers – Classification
| Type | Description | Example |
|---|---|---|
| Supercomputer | Sabse fast, complex calculations (weather forecasting, research) | PARAM, Summit |
| Mainframe Computer | Large organizations, thousands of users simultaneously | Banking, Railway reservation |
| Minicomputer | Mid-range, small companies | Server systems |
| Microcomputer | Personal computer (PC), desktop, laptop, tablet | Dell, HP, MacBook |
📅 3. Generations of Computers – 5 Generations
1st Gen (1940-56): Vacuum tubes, very large, slow (ENIAC).
2nd Gen (1956-63): Transistors, smaller, reliable.
3rd Gen (1964-71): IC (Integrated Circuits), keyboards & monitors.
4th Gen (1971-80): Microprocessors (Intel 4004), PCs, GUI.
5th Gen (1980-present): AI, parallel processing, supercomputers, IoT.
⚙️ 4. Operating System (OS) – Functions & Types
OS kya hai? Software jo hardware aur user ke beech interface provide karta hai. Examples: Windows, Linux, macOS, Android, iOS.
- Functions: Memory management, process scheduling, file management, security, device control.
- Types: Batch OS, Time-sharing OS, Real-time OS, Distributed OS, Network OS.
- Real life: Jab aap computer on karte ho, pehle OS load hota hai (Windows boot).
💡 Popular OS: Windows (most common), Linux (open source), macOS (Apple).
📊 5. MS Office – Word, Excel, PowerPoint
🔹 MS Word: Document processing – letters, reports. Features: font, bold, italic, spell check, mail merge.
🔹 MS Excel: Spreadsheet – calculations, charts, formulas. Basic formulas: SUM, AVERAGE, IF, VLOOKUP. Cell reference: A1, B2.
🔹 MS PowerPoint: Presentations – slides, animations, transitions.
🔹 Shortcut Keys: Ctrl+C (Copy), Ctrl+V (Paste), Ctrl+Z (Undo), Ctrl+S (Save).
📌 Real Life: Office mein report likhna (Word), budget banana (Excel), presentation dena (PowerPoint).
🌐 6. Computer Networking – Types, Devices, Protocols
Network: Do ya zyada computers ka connection data share karne ke liye.
| Network Type | Full Form | Area Covered |
|---|---|---|
| LAN | Local Area Network | Room, building (office, school) |
| MAN | Metropolitan Area Network | City (cable TV network) |
| WAN | Wide Area Network | Countries, world (Internet) |
Networking Devices: Router, Switch, Modem, Hub, Repeater.
Protocols: TCP/IP (Internet backbone), HTTP/HTTPS (web), FTP (file transfer), SMTP (email).
Topologies: Bus, Star, Ring, Mesh.
🌍 7. Web Development Basics – Frontend & Backend
🔹 HTML: Structure of webpage. Tags: <h1>, <p>, <div>, <a>.
🔹 CSS: Styling – colors, fonts, layout.
🔹 JavaScript: Interactivity – buttons, forms, animations.
🔹 Frontend: User jo dekhta hai (HTML, CSS, JS).
🔹 Backend: Server side (PHP, Python, Node.js, Databases).
🔹 Client-Server Model: Browser (client) request bhejta hai, server response deta hai.
💡 Real Life: Google, Facebook, YouTube sab web applications hain.
🛡️ 8. Cyber Attacks & Ethical Hacking – Security Basics
Cyber Attack: Kisi ke computer system ko nuksan pohanchana ya data churana.
- Malware: Virus, Worm, Trojan, Ransomware.
- Phishing: Fake emails se password churana.
- DDoS Attack: Server ko overload karna.
- Man in the Middle (MITM): Communication mein beech mein data churana.
- SQL Injection: Database ko hack karna.
Ethical Hacking: Authorized hacking – security vulnerabilities find karna aur fix karna. White Hat Hacker vs Black Hat Hacker. CEH (Certified Ethical Hacker) certification.
⚠️ Common Mistake: Hacking always illegal nahi hota – ethical hacking legal hai aur companies hire karti hain.
🗄️ 9. Database Management System (DBMS)
DBMS kya hai? Software jo data ko store, retrieve, aur manage karta hai. Examples: MySQL, Oracle, MS SQL Server, MongoDB.
🔹 Database: Organized data ka collection (jaise phonebook).
🔹 Table: Rows (records) aur Columns (fields) se banta hai.
🔹 Primary Key: Unique identifier har record ke liye (jaise Student ID).
🔹 Foreign Key: Do tables ko link karta hai.
🔹 SQL (Structured Query Language): SELECT * FROM students; INSERT, UPDATE, DELETE commands.
🔹 RDBMS: Relational Database Management System (MySQL, PostgreSQL).
📌 Real Life: School database (students, teachers), Bank database (accounts, transactions).
📝 JST Computer Science MCQs – Har topic se practice karein
1. CPU ka full form kya hai?
A) Central Processing Unit B) Computer Personal Unit C) Central Program Unit D) None
2. Supercomputer ka example kya hai?
A) Dell Laptop B) PARAM C) iPhone D) Raspberry Pi
3. 3rd generation computer mein kya use hua tha?
A) Vacuum Tubes B) Transistors C) IC (Integrated Circuits) D) Microprocessor
4. Windows kis type ka software hai?
A) Application Software B) Operating System C) Database D) Web Browser
5. MS Excel mein SUM function kya karta hai?
A) Average nikalta hai B) Numbers ka total karta hai C) Count karta hai D) Multiply karta hai
6. Internet kis type ka network hai?
A) LAN B) MAN C) WAN D) PAN
7. Webpage ki structure ke liye kaunsi language use hoti hai?
A) CSS B) JavaScript C) HTML D) Python
8. Phishing attack kya hota hai?
A) Virus spread karna B) Fake emails se password churana C) Server crash karna D) Hardware damage
9. White Hat Hacker kaun hota hai?
A) Illegal hacker B) Ethical hacker (legal) C) Virus maker D) Data stealer
10. DBMS ka example kya hai?
A) MS Word B) MySQL C) Windows D) Google Chrome
11. Table mein unique identifier kisay kehte hain?
A) Foreign Key B) Primary Key C) Index D) Record
12. Ctrl+C shortcut key kya karti hai?
A) Paste B) Cut C) Copy D) Undo
✅ Correct answers: 1-A, 2-B, 3-C, 4-B, 5-B, 6-C, 7-C, 8-B, 9-B, 10-B, 11-B, 12-C. Saare concepts upar detail mein samjhaaye gaye hain.
📌 Quick Revision – Computer Ke Zaroori Points
| Main Topic | Key Points / Must Remember |
|---|---|
| Computer Basics | IPOS Cycle, Hardware vs Software, CPU (ALU + CU) |
| Types of Computers | Super → Mainframe → Mini → Micro (PC) |
| Generations | 1st Vacuum tubes → 5th AI & Parallel processing |
| Operating System | Windows, Linux, macOS – manages hardware & software |
| MS Office | Word (documents), Excel (formulas), PowerPoint (slides) |
| Networking | LAN, MAN, WAN; Devices: Router, Switch; Protocols: TCP/IP |
| Web Development | HTML (structure), CSS (style), JS (interactivity) |
| Cyber Attacks | Malware, Phishing, DDoS; Ethical Hacking (White Hat) |
| DBMS | MySQL, Primary Key, Foreign Key, SQL commands (SELECT, INSERT) |
🧠 Final Revision Advice: Ye Computer Science notes Roman Urdu mein har topic ke har subtopic ko cover karte hain – generations se lekar database tak. Har definition, real life example, aur MCQ ke saath complete tayari karein. JST exam mein Computer ke 12 MCQs score karein.
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