1.1 systems architecture 0.0 / 5 ? Computingsystems architectureGCSEOCR Created by: 17cattonfCreated on: 05-11-21 12:28 what is the purpose of the cache? A small amount of memory which is on or close to the CPU 1 of 8 what are the registers? MAR(Memory address register) MDR(Memory data register) Program Counter Accumulator 2 of 8 what does the MAR do? holds the memory location of data that needs to be accessed. 3 of 8 what does the MDR do? holds the contents found at the address held in the MAR 4 of 8 what does the program counter do? gives an address value in the memory of where the next instruction is. 5 of 8 what does the accumulator do? a register in which the ALU's results are stored. 6 of 8 what is an embedded system An embedded system is a computer system that is part of a larger system or machine. 7 of 8 Give 3 examples of embedded systems Dishwasher Fire Alarm Mobile phones 8 of 8
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