HSC Resources · General Subjects
Lecture slides and notes for Ict from the General Subjects module in HSC Resources by Md Ahbab. 88 pages.

HIGHER SECONDARY CERTIFICATE 2028 All Groups • English Version • Dhaka Education Board Information and Communication Technology One Paper Subject Code 275 Complete Chapter Notes Full syllabus • Labelled diagrams • Board style questions Prepared by Md Ahbab Hamid Khan ahbab.dev September 6, 2026
HSC 2028 • Information and Communication Technology • Code 275 1 Contents 1 ICT: World and Bangladesh Perspective 5 1.1 Key terms of this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2 What ICT is and what it is made of . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.3 The global village . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.4 Where the global village shows up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.5 Virtual reality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.6 Artificial intelligence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.7 Robotics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.8 Cryosurgery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.9 Nanotechnology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.10 Genetic engineering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.11 Bioinformatics . . . . . . . . . . . . . . . . . . . . . . . . .
HSC 2028 • Information and Communication Technology • Code 275 2 2.15 Board Exam Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 2.16 Cheat Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 2.17 Appendix A: Ten Multiple Choice Questions . . . . . . . . . . . . . . . . . . . . . . . . 28 2.18 Appendix B: Three Creative Question Stems with Model Answers . . . . . . . . . . . 28 2.19 Appendix C: Quick Recap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 2.20 Sources Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 3 Number Systems and Digital Devices 31 3.1 Key terms of the chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 3.2 What a number system is . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 3.3 Positional and non positional systems . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 3.4 The four number systems of the syllabus . . . . . . . . . . . . . . . . . . . . . . . . . . 33 3.5 Any base to decimal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33