Computer systems – Edexcel IAL Computer Science (11 lessons)

11 ready-to-teach lessons for Pearson Edexcel International A Level Computer Science: Computer systems. Every lesson has editable PowerPoint slides, a student worksheet and full answers, and the bundle costs less than buying the lessons one by one. A complete, ready-to-teach bundle for Pearson Edexcel International A Level Computer Science (2026): Topic 1 Computer systems, in 11 bespoke lessons. Every lesson comes with: - **Editable PowerPoint slides**: goals, starter, explanations, diagrams, worked examples, a quick check, a task and an exit ticket, with teacher notes - **Student worksheet (Word)**: recall, applied practice and exam-style questions with marks - **Answer sheet (Word)**: full mark-scheme style answers Worth £54.89 if bought lesson by lesson. ## What's inside - **U1.01** Stored programs and von Neumann - **U1.02** Inside the computer: memory, I/O and buses - **U1.03** Components of the CPU - **U1.04** The fetch-decode-execute cycle - **U1.05** The memory hierarchy - **U1.06** Serial and parallel transmission - **U1.07** The role of the operating system - **U1.08** Multitasking and interrupts - **U1.09** Processes and scheduling - **U1.10** Memory management - **U1.11** The call stack and stack frames ## Why teachers use it - Mapped lesson by lesson to the specification, so coverage is easy to track - Python 3 throughout, as the specification requires - Fully editable: adapt to your class, timings and school template - Works for teaching, revision, cover lessons and homework These are independent resources written for the Pearson Edexcel International Advanced Level Computer Science specification (Issue 1, first teaching 2026; IAS XCP01, IAL YCP01). They are not produced or endorsed by Pearson. Last updated: November 2026.