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Edexcel GCSE Systems Architecture – Learn Guide

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Course Content

1. The purpose of the CPU 3 Topics Sample Lesson

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1.1 What is the CPU?

1.2 The cycle in outline

1.3 Practice: the purpose of the CPU

2. CPU components 3 Topics

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2.1 The ALU and the control unit

2.2 Cache and registers

2.3 Practice: CPU components

3. Von Neumann architecture 3 Topics

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3.1 The stored program concept

3.2 Registers used in the cycle

3.3 Practice: von Neumann registers

4. The fetch-decode-execute cycle 3 Topics

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4.1 The fetch stage

4.2 Decode and execute

4.3 Practice: the FDE cycle

5. The clock and the buses 3 Topics

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5.2 The three buses

5.3 Practice: the clock and the buses

6. Embedded systems 3 Topics

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6.1 What is an embedded system?

6.2 Characteristics of embedded systems

6.3 Practice: embedded systems

7. Bringing it together 2 Topics

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7.1 Mixed retrieval

7.2 Exam practice

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