The Exam Hall

Setting out the paper…

Topics covered in this unit

6 topics tagged
  • Simplification of Boolean Functions10
  • Boolean Algebra and Logic Gates8
  • Basics of Digital Systems7
  • Half-adder and Full-adder6
  • Logic Gates6
  • Karnaugh Map3

Every question is tagged to one of these topics, so your result shows which part of the chapter to revise.

Before you start

There is no negative marking on this paper, so leave nothing blank.

Same subject mix

All Textbooks →
TextbooksClass 9 Computer Science — Unit 1: Introduction to Systems40 Q · 40 minSit it →TextbooksClass 9 Computer Science — Unit 10: Emerging Technologies in Computer Science40 Q · 40 minSit it →TextbooksClass 9 Computer Science — Unit 11: Ethical, Social and Legal Concerns in Computer Usage40 Q · 40 minSit it →TextbooksClass 9 Computer Science — Unit 12: Entrepreneurship in Digital Age40 Q · 40 minSit it →TextbooksClass 9 Computer Science — Unit 2: Number Systems40 Q · 40 minSit it →TextbooksClass 9 Computer Science — Unit 4: System Troubleshooting40 Q · 40 minSit it →
Browse every paper

Frequently asked questions

How many MCQs are in Class 9 Computer Science Unit 3: Digital Systems and Logic Design?
This test has 40 MCQs and a 40-minute timer. There is no negative marking.
Which topics does Class 9 Computer Science Unit 3 cover?
Simplification of Boolean Functions, Boolean Algebra and Logic Gates, Basics of Digital Systems, Half-adder and Full-adder, Logic Gates and Karnaugh Map. Each question is tagged to one of these topics, so your result shows which ones to revise.
Which textbook is this Class 9 Computer Science unit based on?
It follows Unit 3, "Digital Systems and Logic Design", of the Class 9 Computer Science textbook published by the Punjab Curriculum and Textbook Board (PCTB).
Can I practise the other Class 9 Computer Science units?
Yes. Class 9 Computer Science has 12 unit tests, all listed on the Class 9 Computer Science chapter-wise page, and the full Class 9 set is on the Class 9 page.