Component 1.1: The Characteristics of Contemporary Processors, Input, Output and Storage Devices

Question 1

What does ACC stand for?

Answer 1

Accumulator

Question 2

What are the 3 busses in a typical computer?

Answer 2

Control Bus, Data Bus and Address Bus

Question 3

What does ALU stand for and what does it do?

Answer 3

• Arithmetic Logic Unit

- A Part of a CPU that performs arithmetic and logical calculations.

Question 4

Out of the Control Bus, Data Bus and Address Bus, what is the only unidirectional bus?

Answer 4

Address Bus

Question 5

How many levels of cache is there typically?

Answer 5

3 Levels

Question 6

What is cache?

Answer 6

Cache is small and fast but expensive memory in the CPU used to store instructions and data that are accessed regularly.

Question 7

What are the 2 types of contemporary processor design?

Answer 7

Von Neumann and Harvard

Question 8

What is the main difference between a Von Neumann processor and a Harvard processor?

Answer 8

Von Neumann processors have shared memory for programs and data whereas Harvard based processors have separated memory for programs and data.