CPU

what does CPU stand for ?

• central posting utility

• central processing unit .

• CPU

• central popping untint

The CPU fetches instructions from.... and executes those instructions.

• Memory

• ALU

• ROM

• Input Device

What is the purpose of the CPU?

• To process all the data and instructions.
• To turn the computer on.
• To create PowerPoint presentations.
• To provide power to the computer.

The CPU is often refered to as

• The heart of the computer
• The brains of the computer
• The main part of the computer
• The memory of the computer

Inside the CPU, you will find:

• ALU, CU, registers, cache memory

• ADU, PC, storage, RAM memory

• ARM, PC, controller, cache memory

• APM, CU, time signal, RAM memory

What does it mean if a CPU is quad-core?

• The CPU has 6 cores
• The CPU can perform 4 operations at the same time
• The physical processor chip has 4 duplicate CPUs built in
• There are 4 physically separate processor chips

Which of these characteristics of a computer system affects the performance of a CPU?

• The number of external peripherals
• The number of comments in code
• The number of secondary storage devices
• The number of cores

Why does increasing the number of cores increase the speed of the CPU?

• The clock ticks more quickly allowing the fetch, decode, execute cycle to operate more quickly
• More than one instruction can be executed at the same time
• Frequently used instructions and data can be held in the CPU
• There is a reduced requirement for RAM

What is the main advantage of the cache on board the CPU?

• Allows calculation to be performed on the CPU
• Allows sharing of data between registers
• Fast access to frequently used instructions and data without having to go to RAM.
• Allows for two way communication between the CPU and RAM

Why does having a very large cache not give a big performance increase for the CPU?

• Instructions are not always sequential
• A large cache would need to be made of lower grade, cost effective components
• A large cache is more unreliable
• It will take more time to fetch the data in a large cache