IT Systems

Strand 3 topics3.1 Hardware3.2 Software3.3 Networks3.4 Internet3.5 Personal and public communication3.6 Multimedia/digital media3.7 Databases3.8 Spreadsheets, modelling and simulations3.9 Introduction to project management

HL EXTENSION3.10 IT systems in organizations3.11 Robotics, artificial intelligence and expert systems

HardwareThe physical components or parts that make

up a computer system.consisting of input devices, output devices, a

central processing unit and storageName 3 output devices?Name 5 input devices?

HardwareThe physical components or parts that make

up a computer system.consisting of input devices, output devices, a

central processing unit and storageName 3 output devices? Printer, monitor,

speakersName 5 input devices? Keyboard, mouse,

camera, USB flash drive, DVD/CD, SD memory card, touch screen, etc

HardwareThe increasing tendency to develop hardware

in modular units raises a range of social impacts and ethical issues such as the use of non-renewable natural resources, the global transportation of manufactured components and their eventual disposal by individuals, organizations and governments.

Students are expected to discuss possible solutions and evaluate their effectiveness

SoftwareElectronic or digital information associated with

IT systemsA series of instructions that tells the computer

what tasks to perform and how to perform them. They usually operate with a graphical user

interface (GUI pronounced gooey)Interact with the software through the use of

icons or mini images that represent the software as seen on the desktop of PC or laptop.

Typical examples of software are operating systems and application systems software

20/04/23 (Shelly & Vaermaat, p 15, 2010)

SoftwareThe development of software can

have social impacts such as increased access for disabled people, and ethical issues, for example, only producing packages in a limited number of languages, effectively making English the global language.

Students are expected to examine the effects of these developments on stakeholders.

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NetworksA collection of

computers and devices connected together, often wirelessly, via communications devices and transmission media, allowing computers to share resources.

When computers connect to a network , it is online.

20/04/23 (Shelly & Vaermaat, p 10, 2010)

NetworksAlmost all businesses, institutions and

organizations, and an increasing number of households, are linked by networks.

The increasing use of networks raises a range of social impacts and ethical issues such as unauthorized access, intrusive software (viruses, worms and Trojan horses), spam, spoofing and identity theft.

Students are expected to discuss possible solutions and evaluate their effectiveness.

What are the advantages & disadvantages of a network, ring and star topology network layout? (Think of answer in terms of links to strands 1 & 2)

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Client versus server Server is a master computer that

controls access to a resources found on a network. Server has a large storage capacity and expanded communications capabilities.

A client is an individual computer attempting to gain access to information stored on the server via the internet or intranet.

20/04/23 (Shelly & Vaermaat, p 10, 2010)

InternetIs a worldwide collection of networks that

connects businesses, governments, educational institutions and individual home users.

The use of the internet for activities such as e-commerce, academic research and social networking can raise ethical issues and have positive or negative social impacts.

These may include exposure to undesirable materials, cyber-bullying, e-fraud, improved communication between individuals and groups, intellectual property theft, plagiarism, spamming and the global dissemination of ideas.

Personal and public communicationDevelopments in technology have allowed an

increasing number of mobile devices to be developed that enable people to communicate anytime, anyplace & anywhere

Public communication has come through in the form of online chat sites like face book, twitter and Gmail

Personal communication is by way of mobile/cell phones and many other handheld portable devices.

Personal and public communicationDevelopments in technology have allowed an

increasing number of mobile devices to be developed that enable people to communicate anytime, anyplace, anywhere.

There is a wealth of information available to society that can be accessed on demand and has changed the way in which people behave.

It is important to discuss the social impacts and ethical issues relating to health implications of mobile devices, unauthorized access to wireless networks, interception of communications, storage of personal communications for security purposes, and tracking of people.

Multimedia/digital mediainvolves the use and integration of media (for

example, text, images and graphic elements, animation, sound and music, and video) to create digital products that are available online or offline.

Multimedia/digital media raise questions about a range of impacts, issues and solutions that include copyright, intellectual property, and current practices and policies used to grant permission for use.

DatabasesDatabase is a collection of data organised in a

manner that allows access, retrieval and use of that data.

Programs like MS Access and Oracle are examples of common databases utilised by businesses, school administrations, hospitals, etc..

The increasing use of databases raises a range of social impacts and ethical issues such as the rights of individuals with respect to the storage and potential sale of their personal data or the ease of data mining and data matching.

What kind of policies and protocols are needed to be put in place when it comes storing people’s personal history on a relational database?

SpreadsheetsSpreadsheet applications like MS Excel allows

users to organise data in rows and columns and to perform calculations on the data.

The increasing capabilities of computers have allowed individuals and organizations to develop software that can be used to test “what-if” scenarios and create simulations and models of real-world events.

Spreadsheets, through the use of worksheets and graphs, can be used to manage, predict using a series of “what-if” scenarios, and display financial details of businesses.

For an introduction into using spreadsheet look here at bite size

modelling and simulationsModelling and simulations can be used to

recreate or predict the conditions that may result from an event, for example, the areas that will be affected by coastal flooding as a result of different levels of global warming

Introduction to project managementApplication software that allows a user to

plan, schedule, track and analyse the events, resources and costs of a project.

All IT development requires a management method. Knowledge and understanding of the product development life cycle (PDLC) should be used as a framework to develop an IT solution for the internal assessment

IT systems in organizations

Most organizations, at some stage in their development, require the introduction of a new IT system as well as the maintenance and eventual retirement of their current systems

The ability of the organization to manage this change can determine the future viability of the organization

Robotics, artificial intelligence and expert systemsThe increasing capability of IT systems

has allowed developers to implement systems that attempt to understand and imitate human behaviour. These systems have already had profound effects on society, although their effectiveness is largely determined by the accuracy of the algorithms that underpin them.

The increasing use of robotics, artificial intelligence (AI) and expert systems raises a range of ethical issues

For example, at which point should humans hand over key decision-making to a computer? Should robots have the same rights as humans? What social impacts might arise with the replacement of human workers or the creation of smart weapons