Harvard and Von Neumann

Question 1

What are the two types of processor architectures I have to know about?

Answer 1

• von neumann

- harvard

Question 2

What is the von Neumann architecture?

Answer 2

it is an architecture which has a single memory systems for data and instructions (programs)

Question 3

How many buses does the von Neumann architecture incorporate?

Answer 3

one system bus between CPU and RAM(with instructions and data) - one data and one address bus

Question 4

How long does each instruction take in a von Neumann architecture?

Answer 4

2 cycles

Question 5

Can von Neumann implement pipelining?

Answer 5

No

Question 6

Which architecture is older?

Answer 6

Von Neumann hence it is more robust

Question 7

What is von neumann used in ?

Answer 7

Desktop computers, laptops

Question 8

Is the FDE in the von neumann architecture linear?

Answer 8

YES

Question 9

What is the harvard architecture?

Answer 9

an architecture which has separate memory for data and instructions(programs)

Question 10

How many system buses is there in harvard architecture?

Answer 10

2 (data + address bus)

Question 11

What is harvard used in?

Answer 11

embedded systems
DSP (signal processing )
processing systems (audio,images)

Question 12

How long does each instruction take in a harvard architecture?

Answer 12

1 cycle with pipelining implemented

Question 13

Can pipelining be implemented into harvard architecture?

Answer 13

yes

Question 14

What is bottleneck?

Answer 14

delay of transmission of data through a circuit of computers microprocessor or over a TCP/IP network.

It means the computer throughput is limited to the ability of the processor, sometimes it can be caused by processor waiting to fetch or having too much volume of traffic

Question 15

Where does bottleneck happen?

Answer 15

Harvard

Question 16

Why can’t we use pipelining with the Von Neumann Architecture?

Answer 16

Since there is only one bus so it isnt able to fetch instructions at the same time as data is sent. This si known as bottleneck.

Question 17

Why can pipelining be used within a Harvard Architecture?

Answer 17

Since there is seperate buses and memory for data and instructions. This means that the CPU is capable of reading and fetching at the same time.

Question 18

How many cycles does it take for Von Neumann and Harvard Architecture to carry out instructions.

Answer 18

Von Neumann - 2 clock cycles

Harvard - 1 clock cycle