Photo AI
5 (a) Identify one component common to all computers - Edexcel - GCSE Computer Science - Question 5 - 2020 - Paper 1
Question 5
5 (a) Identify one component common to all computers. A Disk drive B Graphics card C Processor D Screen (b) State two components of the CPU. 1 2 ... show full transcript
Worked Solution & Example Answer:5 (a) Identify one component common to all computers - Edexcel - GCSE Computer Science - Question 5 - 2020 - Paper 1
Step 1
Step 2
State two components of the CPU.
Answer
- Arithmetic Logic Unit (ALU): This component performs all arithmetic and logical operations.
- Control Unit (CU): The Control Unit manages the execution of instructions by directing the flow of data within the CPU and between the CPU and other components.
Step 3
Describe how the CPU and main memory work together.
Answer
The CPU and main memory (RAM) work together to execute programs and process data.
-
Data Retrieval: The CPU fetches instructions and data from main memory. This allows the CPU to access the necessary information to perform calculations or execute commands.
-
Instruction Execution: After fetching data, the CPU decodes and executes the instructions. It performs operations based on the data received from the memory.
-
Data Storage: Once the CPU completes its processing, it often sends the results back to the main memory for storage or for further processing. This continuous cycle ensures that the CPU can efficiently perform tasks by quickly accessing and utilizing data stored in RAM.