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GCSE COMPUTING - COMPUTING FUNDAMENTALS

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Alison Hannah

on 24 November 2016

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Transcript of GCSE COMPUTING - COMPUTING FUNDAMENTALS

GCSE COMPUTING
Computing
Fundamentals
Computing
Hardware

Software
Representation of
Data
Databases
Computer Systems
A system is a collection of parts that work together for a common purpose. Computer systems are everywhere these days. They come in all shapes and sizes, from large mainframes to small control systems that make electronic gadgets work. They are everywhere because they are versatile, cheap and small.
Activities
Ms Hannah
COMPUTING FUNDAMENTALS
You should be able to:
(a) define a computer system
(b) describe the importance of computer systems in the modern world
(c) explain the need for reliability in computer systems
(d) explain the need for adherence to suitable professional standards in the development, use and maintenance of computer systems
(e) explain the importance of ethical, environmental and legal considerations when creating
computer systems
helpdesk
Dedicated
System
Answer
Computers: Good or Bad?
Termina este ano o contrato da Central Telefónica PT a qual irá apresentar uma proposta para renovar o equipamento telefónico da CEMAH (Sede e Balcões) – será uma proposta com telefones Cisco, implementada com tecnologia sem recurso a central telefónica física.

? Faz sentido haver um numero de contacto unico na Instituição ?
? Recurso a teclas de opção (Sede, Balcões e netCEM) ?
? Numero geográfico (antigo código de localidade) faz sentido ?
ETHICS
legislation
http://www.google.com/analytics/

username: rui.leal@cemah.pt
password: Go1AnXYR#5

Extension Tasks
1. How would your day have been different today, if there were no computer systems?
2. Identify the inputs, processes and outputs for
a banking system
a telephone system
3. Quickly make a list of devices that are controlled by a computer system
4. Define the term "embedded system".


Compreender que boa parte dos problemas informáticos devem-se a comportamentos inesperados de software de terceiros:

Problemas em email, office, comunicações, primavera, etc., são sistemas não proprietários sujeitos a falhas às quais a IC é alheia;
Gera-se muitas vezes impaciência mas a pressão não contribui para a resolução mais rápida nem atempada do problema.
• Através do ataque por telefone foi possível obter informacão sobre os procedimentos internos para que fossem realizadas as ações pedidas;

- Apenas os gerentes dos balcões estavam perfeitamente cientes do procedimento a seguir perante um pedido por telefone do departamento de Informática. Os restantes colaboradores mostraram uma predisposição para aceder aos pedidos dos atacantes.

- A carta tradicional gerou apenas um acesso, contudo este teria sido suficiente para comprometer o utilizador em causa.

- A taxa de acesso ao site apontado no link no email foi elevada, especialmente se tivermos em atencão que o link continha um erro ortográfico e que o domínio utilizado não era português apesar do site o parecer.

- 2 das 11 pessoas que acederam ao site (cenário email) fizeram download de uma aplicação (disfarçada) e executaram-na. Este é um comportamento de altíssimo risco, uma vez que desta forma é muito mais fácil comprometer qualquer sistema.
Problemas na entrega e na receção de emails
Ficheiros PST corrompidos
Lentidão
Perda de emails sem razão aparente

triagem dos doentes nos hospitais
todos os doentes são importantes mas uns requerem tratamento mais urgente e prioritário do que outros !
É invitável que um dia a máquina de lavar roupa avarie!
What is a system?
For a system to be useful, it must produce something - an output. It needs to recieve and process inputs in order to produce outputs. There may be many inputs and outputs. Systems often interact with other systems. Systems may be made from many sub-systems. Interconnetions between systems are called INTERFACES.
Computer Communications
and
Networking
Programming
Read and Make Notes: http://www.bbc.co.uk/schools/gcsebitesize/ict/hardware/0inputandoutputdevicesrev1.shtml
Test Bite: http://www.bbc.co.uk/bitesize/quiz/q25840807
INPUTS
PROCESSES
OUTPUTS
Task 1: input and outputs... what do you know?
Complete the "Test Bite"
Task 2: Input, Processing & Output
Embedded
System
General Purpose
System
A system dedicated to one track such as controlling a robotic arm in a factory.
An embedded system which is part of a larger electrical or mechanical system such as a washing machine or digital camera processor.
Used for many different purposes, such as playing games or listening to music eg. a desktop computer or smartphone.
Systems act together in some way and are more than just the sum of the individual parts that form them.
Passengers,
electrical energy
Train
Movements
Journeys
Underground railway systems
Food, oxygen
Oxidation
Energy, CO2,H2O
Respiratory System
Enquiry,
deposit
Search,
make booking
Tickets,
Reservations
Holiday Booking System
Task 3: Characteristics of Computer Systems
Complete page 6 of your Computing Booklet...
Ensure you understand the characteristics of
a computer system.
Task 4: In pairs create a presentation on one category of system.
Teach the class about your system.

http://www.cs4fn.org/society/goodorbad.php
When Computers Were Human
Storage: device used to store data (in binary format for processing later)

Input: device used to enter data into the computer

Output: device used to present information/the result of processing to the user
http://www.bbc.co.uk/education/guides/z2c82hv/revision/2

Reliability of Computer Systems: http://www.thinglink.com/scene/649350655701417984
http://bobnational.net/record/64375/media_id/71817

ETHICS
Test your understanding of ethical issues in computing.
http://www.cambridgedigital.com/mooc/html/phase3/5_Activity1/5_Activity1.html
1.
2.
Complete the Worksheet: http://cambridgegcsecomputing.org/sites/94/upload/userfiles/05_ws1.pdf
3. What is your view?
http://www.cambridgedigital.com/mooc/html/phase3/5_Plenary_Activity/5_Plenary_Activity.html
4. Ethical and environmental
considerations
http://cambridgegcsecomputing.org/sites/94/upload/userfiles/05_ws1.pdf
The Brisith Computer Society Code of Conduct
http://www.bcs.org/upload/pdf/conduct.pdf
Computer Misuse Act
Watch the Videos then complete the worksheet.
http://cambridgegcsecomputing.org/sites/94/upload/userfiles/211e_worksheet1_editedct_150dpi.pdf

Data Protection Act
Watch the Video and Answer the Question...
A school holds personal data about its students on a computer system. What should the school do to ensure
that it abides by the law? (6)

Copyright, Patents and Designs Act

Can you...
(a) define a computer system
(b) describe the importance of computer systems in the modern world
(c) explain the need for reliability in computer systems
(d) explain the need for adherence to suitable professional standards in the development, use and maintenance of computer systems
(e) explain the importance of ethical, environmental and legal considerations when creating
computer systems
Computing Fundamentals: Check your Understanding...
http://goo.gl/wUtlGC
http://goo.gl/Uo35wX
http://bobnational.net/record/311236/media_id/311175
Objectives
Explain and give examples of simple computer systems
Identify inputs, processes and outputs
Select and analyse complex computer systems
Deep Learning
http://prezi.com/rfetht975hhl/?utm_campaign=share&utm_medium=copy
Deeper Learning
Learning Objectives
To understand the categories different of computer systems:
dedicated, embedded and general purpose.
To have knowledge of a range of complex computer systems.
To understand the complexities of each systems.
http://strawpoll.me/5616986
Deeper Learning
Reliability of Computer Systems
Learning Objectives
To understand the need for reliability in computer systems.

To have knowledge of the features of a reliable system.
To understand the impact of system failure.
Learning Objectives:
Understand the need for professional standards.
Understand the main types of professional standards.
Know the impact of professional standards on the development of systems.
Deeper Learning
Open the Class One Note
Open the "3. Reliability Review" page.
Go the "Thinglink" and browse around .
Computer programs that are exclusive property of their developers or publishers, and cannot be copied or distributed without complying with their licensing agreements.
Think! Can intellectual property by owned?
Bill Gates had his last full day at Microsoft and turned his attention along with his wife Malinda to what?
Open Standards
Open standards are "free" from copyright restrictions, often known as "copyleft", the principal is based on sharing an idea. The source code is available for editing and can be refined and developed further. The code must be available for other coders to develop

Are you surprised that Android is open source?
Why not?
Proprietary Standards
De Facto Standards
Some systems develop as a standard because of their common use. Popular demand forces out other systems.

Examples include:
QWERTY
ASCII
MP3
HTML
PDF
DOC
Breadcrumb Trail
Microsoft Windows

Industry Standards

Industry standards are managed by the International Standards Organisation. ISO International Standards ensure that products and services are safe, reliable and of good quality. For business, they are strategic tools that reduce costs by minimising waste and errors, and increasing productivity. They help companies to access new markets, level the playing field for developing countries and facilitate free and fair global trade.

Which major car manufacture failed to comply with industry standards. How? What impact did this have? Who is to blame?

Professional Standards
ISO International Standards ensure that products and services are safe, reliable and of good quality. For business, they are strategic tools that reduce costs by minimising waste and errors, and increasing productivity. They help companies to access new markets, level the playing field for developing countries and facilitate free and fair global trade.
Professional Standards Activities

1. Login to your GCSE OCR Computing MOOC
2. Open the COGBOOK
3. Go to Fundamentals of Computing/PROFESSIONAL STANDARDS
4. Work through the activities
5. Open the "iso my connected car thinglink" and explore the industry standards.
http://popplet.com/app/#/2746168
http://bobnational.net/record/_J0Iy0ynSDrAdcbI8IOI7IX
Full transcript