Teacher Pack: Unit 1.1 Systems Architecture J277 (from 2020)

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The resources within this Teacher Pack cover all aspects of the specification in relation to OCR GCSE Computer Science J277 (from 2020) component 1.1.

It includes:                            

·   Teaching PowerPoint (includes checkpoint questions and answers)


·   Student PowerPoint (Includes checkpoint questions, but omits the answers)


·   Homework/Classwork Activities (+ mark schemes)


  • Components of a CPU
  • CPU Performance
  • Embedded Systems


·   End of unit test (+ mark scheme)


Content:



The purpose of the CPU:


  • The fetch-decode-execute cycle
  • Common CPU components and their function: ALU (Arithmetic Logic Unit)
  • CU (Control Unit)
  • Cache
  • Registers


Von Neumann architecture:


  • MAR (Memory Address Register)
  • MDR (Memory Data Register)
  • Program Counter
  • Accumulator


How common characteristics of CPUs affect their performance:


  • Clock speed
  • Cache sizeNumber of cores