LearnITWithMrC

Overview

Learning Objectives

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ID	Skill_name
3.4.3.5	I can understand that the OS handles management of processor(s), memory, I/O devices, applications and security
3.2.13.1	I can explain what a high level of programming languages is.
3.2.13.2	I can explain what a low level of programming languages is.
3.2.13.3	I can explain the main differences between low-level and high-level languages.
3.2.13.4	I can understand that machine code and assembly language are considered to be low-level languages.

🏁 Learning Objective 3.4.4 - CPU

CPU

A CPU(Central processing Unit) is a microchip responsible for data processing in a computer system. Most modern CPUs are built using an architecture (a structure) call the Von Neumann Architecture.

Purpose and function of the CPU

The CPU processes the instructions it receives from programs in what is called a cycle. The number of cycles a CPU can complete in a second is how we measure its speed.

CPU cores

The CPU can also contain a number of cores, these are really the number of individual CPUs on the CPU MicroChip.

Speeding up execution

The speed of a CPU is measured in clock cycles per second. The number of cycles a CPU can perform in a second is called its clock speed. if a CPU has a clock speed of 3.4 Ghz thats means it can complete 3.4 billion operations per second.

In order to increase the speed of our CPU, we can either increase the number of cores on the Microchip, or the amount of memory on the Microchip . This type of memory on a CPU microchip is called Cache memory.

Cache memory: - Part A

Cache memory: - Part B

The Fetch Decode Execute cycle

For each cycle of the CPU it can process data using the fetch - decode - execute (FDE) cycle

Fetch Decode Execute cycle simulation

Click the play button in the simulator below and watch how date is processed in a CPU

Little man Computer Challenge

Complete Little Man Computer task 'Mini Challenges' by clicking on the image below