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O/L ICT Study Guide 2026 | PaperMaster.lk | PaperMaster LK
Home Study Guides O/L ICT Study Guide 2026 – Complete Revision Guide A complete O/L ICT Study Guide for Sri Lankan students covering computer systems, hardware, software, data representation, networking, databases, programming concepts, past paper practice and exam preparation for the 2026 examination.
O/L ICT Study Guide 2026 This O/L Information and Communication Technology (ICT) Study Guide is designed to help Sri Lankan students revise the most important topics required for the G.C.E. Ordinary Level ICT examination.
ICT becomes easier when students understand how computer systems, software, networks, databases and digital technologies work instead of simply memorizing definitions.
What You Will Learn 1. Computer Systems A computer system consists of different components working together to process data and produce useful information.
Students should understand:
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Important Tip Do not only memorize the names of computer devices.
Understand the purpose of each device and whether it is used for input, output, processing or storage.
2. Hardware and Software Hardware refers to the physical components of a computer system.
Software refers to programs and instructions used by a computer.
Important software categories include:
Revision Tip Practice identifying whether a given item is hardware or software and explain its function.
3. Data and Information Data refers to raw facts that have not yet been processed.
Information is produced after data is processed into a meaningful form.
Students should understand:
Think about real-life examples to understand the difference between data and information.
4. Number Systems and Data Representation Computers represent information using binary numbers.
Important Tip Practice number conversions regularly.
These questions become much easier when you understand the method and solve several examples.
5. Operating Systems An operating system controls the resources of a computer and provides an interface between the user and the computer hardware.
Students should understand functions such as:
Examples of operating systems include Windows, Linux, Android and macOS.
6. Computer Networks A computer network connects two or more devices so that they can communicate and share resources.
Important concepts include:
Network Tip Learn the purpose of each network device instead of memorizing names only.
7. Internet and Communication Technology The Internet is an important part of modern ICT.
Students should understand:
Students should also understand the advantages and risks of using online services.
8. Databases A database is an organized collection of related data.
Important database concepts include:
Database Tip Use simple examples such as a student database to understand fields, records and tables.
9. Programming and Problem Solving Programming involves creating instructions that a computer can follow.
Students should understand basic concepts such as:
Important Tip Before writing a solution, understand the problem and identify the required input, processing and output.
10. Flowcharts and Algorithms An algorithm is a sequence of steps used to solve a problem.
A flowchart represents those steps using standard symbols.
Students should be familiar with:
Practice converting simple algorithms into flowcharts and flowcharts into written steps.
11. Information Security Information security is increasingly important in modern computing.
Students should understand:
Security Tip Never share passwords or sensitive personal information with unknown people or untrusted websites.
12. Past Paper Practice Past paper practice is one of the most effective ways to prepare for the O/L ICT examination.
Past papers help you understand how ICT concepts are tested in the examination.
Common Mistakes to Avoid
Exam Preparation Tips
Final Advice ICT is easier to study when you connect theoretical concepts with real computer systems and technologies you use every day.
Do not only memorize definitions. Try to understand how each technology works and why it is used.
Combine textbook revision, short notes, practical knowledge and past paper practice to prepare effectively for the examination.
Use PaperMaster.lk to access past papers, model papers, study guides and educational resources for your O/L examination preparation.
Good luck with your studies and your 2026 O/L examination!
