computer hardware 0.0 / 5 ? ICTOperating systemsGCSECCEA Created by: tharpur794Created on: 12-03-18 11:16 what does CPU stand for central processing unit 1 of 12 control unit it executes all instructions provided by programs 2 of 12 immediate access store each piece of data is stored in the random access memory chip so that the CPU can retrieve data immediately 3 of 12 register where data or control information is temporarily stored 4 of 12 fetch execute cycle explains the basic steps the CPU takes to process an instruction 5 of 12 MAR (memory address register) the memory address register stores the current instruction or data being executed 6 of 12 MDR (memory data register) when the instruction is fetched the memory data temporarily holds it 7 of 12 IAR (instruction address register) the instruction address register holds the current instruction to be excuted 8 of 12 ALU (arithmetic logic unit) the ALU will carry out the logical part of the instruction for example a calculation 9 of 12 clock speed the CPU clock speed is measured in cycles per second, it is the speed that makes it look as though the compter is completing multiple tasks at once 10 of 12 cache size has extremely fast access, so sections of a program abd its associated data are copied there to take advantage of its short fetch execute cycle 11 of 12 number of cores modern computers speed up their clock speed/processing power by containing more than one processor 12 of 12
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