a) Write these six stages of the Von Neumann fetch-execute cycle in the correct order.
– Instruction is copied from the MDR and is placed in the CIR
– The instruction is executed
– The instruction is decoded
– The address contained in PC is copied to the MAR
– The value in PC is incremented by 1
– Instruction is copied from memory location in MAR and placed in MDR
b) Explain how the following affect the performance of a computer system.
i) Width of the data bus and address bus.
ii) The clock speed.
iii) Use of dual core or quad core processors.
c) A student accessed the BIOS on their computer. They increased the clock speed from 2.5 GHz to 3.2 GHz.
Explain the potential dangers in doing this.