Exploring the Inner Workings of a Computer

The Function of the CPU

Systems Architecture

Fill in the Blank

What is the cycle called?

Multiple Choice

What does CPU stand for?

• Central Processing Unit
• Computer Protocol User
• Cool Pokemon Unit
• Computer Processing Unit

Multiple Choice

Which of these is not a step in the FDE cycle?

• Instructions are fetched from main memory
• Instructions are decoded in the control unit
• The decoded instruction is executed
• The ALU decodes the instructions

Multiple Choice

What is the main function of the CPU?

• To carry out processing of the data.
• To help with playing games.
• To fetch instructions from memory, decode them and execute the instructions.
• To heat up the computer.

Fill in the Blank

What is the component of the CPU that performs logic or maths?

Multiple Choice

A bus is a...

• Type of public transport

• Communication channel which sends data around the computer

• A place where data is stored in the processor

Multiple Select

The buses involved in the Fetch-Decode-Execute system are...

• Data Bus

• Information Bus

• Address Bus

• Control Bus

• Process Bus

Multiple Choice

What is the role of the ALU?

• Carries out calculations and logical operations

• Stores the most recently fetched instruction that is waiting to be decoded and executed

• Stores the data that has been fetched from or stored in memory

• Keeps track of the memory location of the line of machine code being executed. It changes to point to the next instruction needed for the FDE cycle allowing the program to be executed in sequence

• Stores the address of the data or instructions that are to be fetched from or sent to

Multiple Choice

How many colours can be used for each pixel if the colour depth is 4 bit?

• 4 colours
• 5 colours
• 15 colours
• 16 colours

Multiple Choice

Increasing the colour depth means…

• A bigger range of colours can be used for each pixel
• More pixels are in the image.
• More colours are in the image.
• Darker colours

Multiple Choice

What would be the colour depth of an image which can use up to 256 colours?

• 256 bit
• 8 bit
• 8 byte
• 256 byte

Multiple Choice

What is this an example of?

• Overflow error
• 8 bit binary addition