Welcome to LastHopeStudy.com, your reliable platform for the latest, exam-focused, and board-approved notes. If you’re looking for 9th class computer chapter 3 – Digital Systems and Logic Design notes from the new PTB book (2025–26), you’ve landed at the right spot!
💡 9th Class Computer Chapter 3 – Digital Systems and Logic Design | Notes PDF | New Book 2025–26
We offer free downloadable PDF notes in Urdu Medium and English Medium, with complete solutions for MCQs, short questions, long questions, and exercise questions—all aligned with the latest Punjab Textbook Board (PTB) syllabus.
📘 Chapter Overview – Digital Systems and Logic Design
In Chapter 3 – Digital Systems and Logic Design, students are introduced to the fundamentals of digital electronics and logical thinking used in computers. Key topics include:
- Difference between analog and digital systems
- Binary logic and digital signals
- Logic gates: AND, OR, NOT
- Truth tables and gate-level circuits
- Real-life applications of digital logic
This chapter builds the bridge between number systems and hardware logic—core elements of digital computing.
✅ What’s Included in These Notes?
These notes are based on the new PTB syllabus 2025–26 and include:
✔️ Solved Exercise Questions
✔️ Topic-Wise Short Questions with Answers
✔️ Board Pattern Long Questions
✔️ Important MCQs with Answers
✔️ Truth Tables & Gate Diagrams
✔️ Logic Gate Rules & Applications
✔️ Available in Urdu Medium and English Medium
We’ve used book language to keep the concepts simple, authentic, and easy to revise before exams.
📥 View Online or Download PDF (Free)
The notes are mobile-optimized, printer-ready, and great for online or offline learning.
📌 Notes for All Punjab Boards
These notes are suitable for students from all Punjab Boards, including:
- Lahore Board
- Gujranwala Board
- Rawalpindi Board
- Faisalabad Board
- Multan Board
- Bahawalpur Board
- Sargodha Board
- DG Khan Board
- Sahiwal Board
No matter which board you belong to, our notes help you stay one step ahead.
💡 Why Is This Chapter Important?
This chapter is the backbone of digital computing. Understanding logic gates and digital systems is essential for:
- Programming & Hardware logic
- Designing computer circuits
- Data flow understanding in CPUs
- Future studies in computer science and electronics
Our computer class 9th new book lecture notes explain each logic gate and its function in simple language, supported by truth tables and examples.
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