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Summary of CAPS Information Technology Theory eBook Grade 10 €15,73
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  3. 10th Grade
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  5. Information Technology

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Summary of CAPS Information Technology Theory eBook Grade 10
 0 keer verkocht
  • Vak
  • Information Technology
  • Instelling
  • 10th Grade

My Grade 10 IT Theory Notes provide extensive coverage of the DBE IT Theory E-Book. They include clear explanations and examples to help you understand the material. These notes are a valuable resource for anyone looking to excel in their IT theory exams.

Laatste update van het document: 2 jaar geleden

Voorbeeld 4 van de 38  pagina's

Document informatie

  • 15 november 2022
  • 4 januari 2023
  • 38
  • 2021/2022
  • Samenvatting

Onderwerpen

  • caps
  • information
  • technology
  • theory
  • grade 10
  • networks
  • hardware
  • system software
  • internet
  • services
  • www
  • world wide web
  • it
  • basic concepts of computing
  • data representation storage and social implications
  • co

Geschreven voor

  • 10th Grade
  • Information Technology
  • 200
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Voorbeeld van de inhoud

© Thomas Kabalin




Information
Technology
Introduction
 Input device: any hardware or peripheral device that allows you to enter data into a
computer or interact with a computer
 Storage device: a hardware device that is used for storing data
 Processing device: a hardware device that receives the data, performs a set of instructions,
and then returns the processed data to the RAM
 Output device: a device that formats and presents data in a form understandable to a user
 Communication device: a hardware device capable of transmitting a signal over a wired or
wireless connection
 Random Access Memory (RAM): a hardware device, usually on the motherboard, that allows
information and data to be temporarily stored and retrieved while the computer is on

Computer
Hardware Software
1. Processor (CPU + GPU) Application System
2. Memory (RAM + Cache)
3. Storage



General Model of a Computer
ICT and IT
 Information and Communication Technology refers to technologies that capture, transmit
and display data and info electronically and includes all devices, applications and networking
elements that allow people to connect in a digital world
 It is a combination of computer-based technologies (computing devices) with
communication technologies (cellphones, internet)
 The hardware, software and systems needed to communicate electronically
 Made up of:
o People: supply data and make decisions from the output based on the results of
processing from an ICT system
o Hardware: input devices, storage, processor, output devices, communication devices
o Procedures: to determine what needs to be done and when; causes passing of data
(or information) between people
o Software: computer programs which provide the step-by-step instructions to
complete the task



1|Page

, © Thomas Kabalin


o Data: raw material processed by the system to provide the information for the
output (includes sounds, images, videos)
 ICT systems need to receive, store, manipulate and transmit data – done by computers
 Computers are programmable electronic devices designed to accept data, perform
prescribed mathematical and logical operations at high speed and display the results of
these operations
 Computers refer to hardware – cannot function alone
 Start functioning when they receive data to process
 Data is store, manipulated according to instructions revived, and sent back to the user
 IT: the development, maintenance and use of computer systems, software and networks for
processing and communicating data

General Model of a Computer

Storage

Memory



Input CPU Output




Communication




 IPOS (IPO) = receives input, processes according to user instructions, provides an output,
stored in desired format
 Input – data (raw facts and figures that can be processed using arithmetic and logical
operations to obtain information)
 Output after processing – information


Hardware & Software
 Computer needs both to function (interdependent)
o Hardware: physical components of the computer
o Software: application software and system software (OS) refers to programs used to
direct the operation of a computer (also has instructions on how to use it)
 Hardware needs software because it relies on the processed instructions to provide input
 Software needs hardware to process the user’s instruction



2|Page

, © Thomas Kabalin


Hardware
 Input devices – hardware devices that allow you to input data into, or interact with, a
computer (e.g. touchscreen keyboard, mouse, keyboard)
 Storage device – hardware device that stores data for later use (hard disk drive and solid-
state drive)
 Random Access Memory (RAM) – fast, temporary form of storage
o All data and instructions currently being executed are stored in RAM
o It is volatile – data is erased when computer is turned off
o Also called Memory
 Processing devices receive data from the RAM, perform sets of instructions and return the
processed data to the RAM
o Central Processing Unit (CPU) processes general instructions – every application uses
it to collect, decode & execute instructions
o Graphics Processing Unit (GPU) processing instructions that create pictures on the
screen (3d games use GPU to create images)
 Output devices return the computer’s instructions, as results, to the user (e.g. monitors,
printers)
 Communication device – hardware device capable of transmitting an analogy or digital signal
over a wired or wireless connection (e.g. modem, network interface card (NIC))

Software:
 Software: the set of instructions a computer uses to complete any instructed task
 Software is operated by the hardware

System software
 Manages and controls computer and the hardware of the computer
 OS is most important type of system software (e.g. Windows, Mac OS, Linux)
 Designed to control and coordinate tasks and functions of computer hardware

Application software
 Program built for a specific purpose
 Lets the user accomplish a function or create content
 Needs system software to function
 Multiple applications packaged together = application suite
 E.g. Google Chrome, Skype, Games, Mobile apps

Shareware, Freeware, FOSS, Proprietary software




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, © Thomas Kabalin




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