everything

Question 1

Processors have a speed measured in….

Answer 1

Hertz

Question 2

Data and Instructions in use are stored in the:

Answer 2

Main Memory

Question 3

What doesn’t affect the performance of the computer

1. Clock speed
2. Number of cores
3. Cache size
4. Number of instructions in the program

Answer 3

4. Number of instructions in the program

Question 4

If the number of cores goes up from 2 to 4 – what is the exact effect on
performance?

Answer 4

The maximum number of instructions executed per second doubles

Question 5

Central processing unit (CPU)

Answer 5

Decodes and executes instructions

Question 6

Order that registers are used in the Von Neumann cycle

Answer 6

• Program counter (PC)
• Memory Address Register (MAR)
• Memory Data Register (MDR)

Question 7

Embedded system

Answer 7

A computer system designed for a specific purpose

Question 8

Factors affecting the speed of the CPU

Answer 8

• Clock speed
• Number of cores
• Cache size

Question 9

Cache

Answer 9

Provides fast access to frequently used instructions

Question 10

Von Neumann Architecture

Answer 10

Instructions are fetched, decoded and executed one at a time

Question 11

Memory Data Register (MDR)

Answer 11

Holds the data fetched from or to be written to the memory

Question 12

Memory Address Register (MAR)

Answer 12

Holds the address of data ready for use by the Memory Data Register

Question 13

Program Counter (PC)

Answer 13

Holds the address of the next instruction

Question 14

Control Unit (CU)

Answer 14

Sends signals to control how data moves around the CPU

Question 15

Arithmetic Logic Unit (ALU)

Answer 15

Performs calculations and logical decisions

Question 16

Address Bus

Answer 16

tells data where it should be.

Question 17

Data bus

Answer 17

A communication system which carries data to the components which need them.

Question 18

Control Bus

Answer 18

Controls data via wires to CPU

Question 19

What is the CIR?

Answer 19

The current instruction register contains the current instruction during processing.

Question 20

What is the ACC?

Answer 20

The accumulator holds the results of all the calculations.

Question 21

Why is cache needed?

Answer 21

To provide the CPU with data quicker than the main RAM and to temporarily store data that the CPU is likely to use next.

Question 22

Where is the location of cache?

Answer 22

Inside the CPU chip.

Question 23

What is the size and speed of level 1 cache?

Answer 23

Smallest and fastest.

Question 24

What is the size and speed of level 2 cache?

Answer 24

Large and holds lots of data. It is slightly slower than level 1 cache.

Question 25

What is the size and speed of level 3 cache?

Answer 25

It is the biggest size of cache and it holds the most amount of data. Even though it is the slowest level of cache, it is still faster than the main RAM.

Question 26

The Von Neumann architecture is also known as the……

Answer 26

software program computer.

Question 27

What is the clock?

Answer 27

It is a microchip regulates the timing and speed of all computer operations, as well as determining the speed of the of the CPU.