Differences between Harvard and Von Neumann

Question 1

What is the difference in memory space

Answer 1

Von Neumann : share memory space for instructions and data

Harvard:

Has separate memory space for instruction and data, Both need a separate memory bus
Can read and write at the same time

Question 2

Arithmetic Logic Unit (ALU)

Answer 2

Performs Arithmetic and logic operations on data

Question 3

Control Unit (CU)

Answer 3

Control the signals required to coordinate the running of the processor, including moving of data.

Question 4

Memory Address Register (MAR)

Answer 4

Holds the address of the memory location from which data or an instruction is to be fetched or written

Question 5

Memory Data Register (MDR)

Answer 5

Used to temporarily store the data which is read from or written from. All data from the memory must travel down the data bus and pass through the MAR

Question 6

Current Instruction Register (CIR)

Answer 6

Holds the current instruction being executed

Question 7

Address Bus

Answer 7

This bus is responsible for communication the memory locations of the data/instructions that needs to be fetched/moved between devices.

Question 8

Data Bus

Answer 8

Carries the binary that makes up the actual information being transmitted around the CPU/computer.

Question 9

Control Bus

Answer 9

Carries command and control signal to and from every other component of the CPU/computer

Question 10

Buses

Answer 10

These are simply a collection of wires/channels which allow data/instructions to be communicated between devices.