Grade 11 IT - Course Introduction

OK. Here are study notes in markdown format, based on the provided text.

Contents Overview

• This outlines the chapters and units covered in the material.
• Term 1 covers hardware, software and networks
• Term 2 covers computer management and electronics
• Unit 7.1 discusses effects of digitalisation, while 7.2 discusses protecting online identity
• Chapter 8 introduces Database Management
• Term 3 centers on Database Design and Social Implications
• Term 4 focuses on Internet, WWW, Internet Services and Social Implication

Introduction to the Book

• Welcome to the Grade 11 Information Technology Theory Book
• This book provides all info needed to cover the Grade 11 Information Technology Curriculum
• This will develop the skills, attitudes, and values needed to be successful in studies

Overview of Chapter Features

• Each chapter has features which are meant to help learning
• The content provides guidance of what is covered
• It states what should be learnt by the end of the chapter
• It gives an idea of what will be expected as a learner

Chapter 1: Hardware

• In Grade 10, one learned about several different input-, processing-, output- and storage devices
• Chapter 1 will look at hardware and extend knowledge while learning more about the component connecting these devices: the motherboard
• Subjects such as computer memory, including RAM and ROM in greater detail will feature

Hardware in a Nutshell

• Computer hardware refers to physical components that make up a computer
• Hardware include devices that stand on their own like monitors and keyboards
• Examples of hardware are components inside the computer like the CPU and motherboard
• Computer hardware is grouped into categories including: Input devices, Output devices, Storage devices, Processing devices, Communications device and and Memory

Motherboard Basics

• The motherboard connects all hardware devices and sends signals from one device to the next.
• It provides physical structure for other components, connects hardware, provides power, and sends signals between hardware.
• A motherboard is a large PCB with specific slots for each hardware

Motherboard Components

• Key components that can connect to the motherboard include: CPU, GPU, RAM, ROM, etc
• The BIOS (Basic Input/Output System) is a set of instructions that run every time a computers starts up
• The BIOS is stored on the ROM
• A Central Processing Unit (CPU) runs all programs and processes all software instructions, being responsible for processing general instructions
• The Graphics Processing Unit (GPU) is responsible for processing the instructions that create the pictures on a screen
• All active programs and data that is currently being worked stay in RAM

Motherboard Slots

• A computer connects slots with components, as well as other expansion components
• Some slots include CPU, DIMM, PCI/PCIe, GPU/PCIe and SATA slots

Motherboard Busses

• The path connecting different components on a motherboard is a "bus."
• Buses facilitate the communication system including hardware, electrical conductors, format, and software.
• An Internal bus is the communication highway of the motherboard which links different parts of the computer to the CPU and the main memory
• An external bus is the interface for peripheral devices to get connected to the CPU, which prevents plugging a device into the wrong one
• Busses have a power bus to energize system components
• Buses have a control and data bus which dictates control signals and provides physical addresses

Hardware Modular Design

• Computers are built using a modular design, meaning that, instead of being made from a single component, they are made of several components
• Components arent built into the motherboard, so one can remove or replace the computers components at any time
• The modular design allows one to create thousands of computers with different components, speeds and abilities

Expansion Cards

• Expansion cards can expand the computer features through the PCI and PCI-express slots
• Expansion cards include Ethernet card, Wifi Card, Sound card and TV Capture Card

Data Flow

• Basic routes are used by motherboard to transfer computer signals

Caching

• Caching is a technique used by computers to store data thats is going to be used soon in a faster form of memory so it can be accessed
• There are 3 forms for caching including: CPU cache, Disk cache, and Web cache.