The CPU

The CPU

Explained

Multiple Select

Which of the following are functions of the CPU?

• Perform calculations

• Communicating with main memory

• Storing data permanently

• Allowing objects to move in a computer game

• Storing all the commands of a loaded app while being used

The factors of CPU performance

• Clock Speed - measured in Hertz - amount of instructions handled in one second (like all kinds of frequency)

• Cache Memory - stores those commands frequently used - caching avoids data transfer between RAM and CPU

• Word Length - how many bits can the CPU send/receive at once (32-bit, 64-bit, 128-bit

Multiple Choice

Which of these are measured in Hertz?

• Cache

• Clock speed

• RAM

• Word length

Pay attention for the video - then be ready for some questions

32-bit vs 64-bit CPUs

Multiple Choice

Difference between a word and a byte in Computing is..

• Byte is 8 bits, Word is 4 bits

• Byte is 8 bits, Word is 32-bit

• Byte is 8 bits, Word is 64-bit

• Byte is 8-bits, Word is multiple amount of bits

Multiple Choice

A 64-bit CPU is processing a 128-bit instruction used by an application. How many transfer operations are needed (words) to load the instruction into the main memory?

• 1

• 2

• 3

• 4

Multiple Choice

The difference between a 64-bit CPU and a 32-bit CPU is that...

• It is bigger in size

• Stores more data

• Can address more main memory locations at the same time

Pay attention for the video - then be ready for some questions

CPU Cache Explained

Multiple Choice

Cache is used to....

• Store data permanently

• Store files

• Store opened apps

• Store frequently used commands of apps & OS

Multiple Select

Two reasons why cache affects performance are:

• It is found integrated on the CPU

• Stores a small amount of data

• Avoids data transfer to RAM by storing frequently used commands

Open Ended

How do you define a multi-core CPU?

Pay attention for the video - then be ready for some questions

Multi-core explained

Multiple Choice

A multi-core processor works with a technique called...

• Dependence

• Independence

• Parallelization

• Tolerance

Multiple Select

Which of these applications do benefit from multi-core processing?

• Command prompt

• Video Editing

• Weather Modelling

• Scientific Research

• Writing a text document

Multiple Choice

Not all computer games benefit from the use of multi-core processing....

• True

• False

CPU Addressing

Accessing commands from main memory for further processing