System Architecture 0.0 / 5 ? ComputingComputer systemsGCSEEdexcel Created by: pepsglassesCreated on: 25-03-18 15:39 What is the purpose of the CPU? The purpose of the CPU is to process data and execute instructions. 1 of 14 What is the MAR's purpose? To hold the memory location of data that needs to be accessed. 2 of 14 What is the MDR's purpose? To hold data that is being transferred to or from memory. 3 of 14 What is the Program Counter's purpose? To contain the instruction of the next instruction to be executed. 4 of 14 What is the Accumulator? Where arithmetic and logic results are stored. 5 of 14 What is the ALU's purpose? To perform arithmetic and logic calculations. 6 of 14 What is the Control Unit's purpose? It controls the computer's operation, tells them how to respond to instructions it's just read, and provides timing and control signals. 7 of 14 What is Cache? It's a small amount of memory which is closer to the CPU than RAM. 8 of 14 What is Cache used for? To temporarily hold instructions and data the CPU is likely going to reuse. 9 of 14 How does the clock speed affect the CPU? The faster the clock speed, the better the CPU performance. 10 of 14 How does the Cache Size affect the CPU? The bigger the Cache Size, the better the CPU performance. 11 of 14 How does the number of cores affect the CPU? The more cores, the better the CPU performance. 12 of 14 What is an embedded system? A system with a specific function within a larger system. 13 of 14 What are some examples of embedded systems? Washing machines, ATMs, Calculators, Thermostats. 14 of 14
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