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Summary

Summary of each unit

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These documents contain summaries of the information required for the OCR exams for A level Computer Science. They are split into each unit and contains all the necessary information and some which may or may not necessarily be needed at the time, however it is all useful to the course.

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  • August 28, 2023
  • 8
  • 2022/2023
  • Summary
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Available practice questions

Flashcards 10 Flashcards
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Some examples from this set of practice questions

1.

What are the main components of a Processor

Answer: ALU (Arithmetic Logic Unit) Control Unit Registers Buses

2.

What are the different Registers?

Answer: Program Counter (PC) Accumulator (ACC) Memory Address Register (MAR) Memory Data Register (MDR) Current Instruction Register (CIR)

3.

What is the FDE cycle?

Answer: Fetch-Decode-Execute 1. Fetching instructions 2. Decoding instructions 3. Executing the Decoded Instruction

4.

What factors affect the CPU performance?

Answer: Clock Speed Number of Cores Type and size of Cache Memory

5.

What are the 2 main types of Computer Architecture?

Answer: Von Neumann Architecture Harvard Architecture

Flashcards 10 Flashcards
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Some examples from this set of practice questions

1.

What does RISC stand for?

Answer: Reduced Instruction Set Computing

2.

What does CISC stand for?

Answer: Complex Instruction Set Computing

3.

What is a GPU?

Answer: Graphics Processing Unit.

4.

What are the 3 main types of storage?

Answer: Optical Magnetic Flash

5.

What are examples of Optical Storage?

Answer: CD DVD Blu-Ray

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