CPU & Systems Architecture

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.

What are registers used for?

• To check that students are in school.
• To temporarily hold bits of data needed by the CPU.
• To make sure that the CPU runs properly.
• To make the CPU faster.

What happens at the Decode step of the fetch-decode-execute cycle?

• The CPU translates the instructions to machine code

• The CPU fetches the information from RAM.
• The instructions are executed.

What is the purpose of the memory data register?

• It memorises everything
• It keeps track of the instructions
• It holds data and instructions to be carried out by the CPU

• It allows you to input something

What does CPU stand for?

• Control Processing Unit
• Central Processing Unit
• Central Power Unit
• Center Power Unit

What is the purpose of the Memory Address Register (MAR)?

• Holds the location of where the data is to be stored / read from
• Holds memory
• Holds instructions
• It does nothing

What is the purpose of the accumulator register?

• It carries out instructions
• It tells you the data's location
• It stores data being used in calculations
• It is the control unit

What is the program counters job?

• To count the programs
• It contains the memory address of the next instruction to be loaded
• It stores instructions
• It carries out the calculations

A CPU can contain one or more processing units. Each unit is called a ___.This is one of the  key factors about CPU architecture that affect its performance.

• Core
• Intel
• AMD
• Megabite

CPU carries out a cycle called___. 

• Execute-decote-fetch
• Fetch-decode-execute
• Fetch-execute-decode
• Decode-execute-fetch