Von Neuman Architecture

Question 1

what is a bus?

Answer 1

a circuit on the motherboard that connects the CPU to other components and moves instructions

Question 2

Address bus

Answer 2

carries the memory address information from the processor to main memory, it is uni-directional

Question 3

data bus

Answer 3

carries data between the processor and the memory, it is bi-directional

Question 4

control bus

Answer 4

sends out signals to coordinate and manage the activities of the motherboard components, it is uni-directional

Question 5

what is the stored program concept?

Answer 5

when a program should be electronically stored in binary-number format in a memory device so that instructions could be modified by the computer

Question 6

fetch-execute cycle: fetching the instruction

Answer 6

CPU uses address bus to fetch instruction, data from the address is then moved to the IAS via the data bus

Question 7

fetch-execute cycle: decoding the instruction

Answer 7

The CPU decodes the instruction using commands from the ‘instruction set’

Question 8

fetch-execute cycle: executing the instruction

Answer 8

The CPU executes the instruction now that it has decoded it by processing the data