computing - Fundamentals of computer systems

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  • Created by: CrazyWob
  • Created on: 08-11-16 12:13

computer system definition

a computer system is a system that inputs , processes and then outputs data. Many of its methods of input and output devices are peripherals that can be plugged into the computer system;

input devices

- microphone

- touchscreen

-mouse

-keyboard

output devices

- screen

-speaker

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importance of computer systems

There are many uses of computer systems that make them vital in our lives including;

  • internet - grows hugely over last 20 years - Is used in many computer systems to enable people to communicate
  • education - computers provide a huge source of information not available years ago - virtual learning environments (VLE) can aid learning with the classroom and help students - interactive whiteboards also aid learning
  • leisure - computer systems help to plan and promote events such as concerts and matches - gaming has grewn hugely in the last decade (helped by the development of the internet and online social gaming) - social media has become a huge part of many people's lives and can help mass-marketing campaigns
  • online shopping - online shopping has become hugely popular over the last couple of years, meaning that businesses and retailers can more easily sell to the mass market, because;

- It is more convenient than going to the store

- It is easier to find a wider range of products

-products are usually cheaper

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Ethical and environmental considerations

ethical considerations - what is right and wrong in society?

  • open-source software - should open-source software be compulsory if they should not own intellectual property?
  • mobile phones - should young children be allowed to have their own mobile phones?
  • social media - should children be allowed to access social media during lesson time?

environmental considerations - what is good and sustainable for the environment ?

  • resources - computer systems contain many resources (plastics from oil/ gold) that must be disposed of correctly because;

- These resources are becoming scarce and so should be carefully conserved and recycled

-  If disposed of incorrectly these resources can be very damaging to the environment (landfill sites can be unsightly and damage areas / plastics in oceans can harm wildlife)

- The production of these resources also damage the environment, so recycling will decrease their demand

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legal considerations (what is legal in a certain c

There are many laws in place to stop the misuse of computers and the data that can be stored on them such as;

computer misuse act - ( How people should use computer systems and what they can do on them)

- illegal to hack into another persons computer system to access unauthorised information

- illegal to damage or harm another persons computer system with a virus, worm or trojan

Data protection Act - (How personal data can be acquired, stored and shared by organisations)

- A person must be asked before personal data is collected if they are happy for it to be so

- There must be a clear purpose for an association having personal data, they must only use it for this reason, and the data must be deleted after it is no longer required

- An assossiation should not share someone data with another associatio without permission

Many other crimes can be aided by the use of a computer system (e.g theft)

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reliability of computer systems

computers are important ("importance of computer systems") and so need to be reliable

- some computer systems can be life depending (e.g traffic lights / pacemakers)

If computer systems go wrong;

  • businesses can experience a loss in revenue as it's sales mediums collapse
  • Many future problems for businesses due to damaged reputations
  • businesses can be fined for breaking the law ("legal considerations")

many things can go wrong with computer software however including;

  • software can have faults and bugs that causes things to go wrong
  • Viruses/Trojans/Worms can attack computer systems making them unfit for use
  • human error can cause faulty systems or for systems to be shut down accidently

or a system could be damaged physically;

  • natural disasters can damage computer systems
  • computer systems can be maliciously deliberately damaged
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protection against system failure

Backups - Files should be backed up in case they are deleted or accidentally written over

  • Files should be backed up regularly as part of a backup schedule at a seperate site
  • Full backup - makes a backup of everything on a system
  • incremental backup - backs up only new things that have been saved onto a system

disaster recovery plan - is a system shutdown occurs then systems can be restored from backups

  • UPS (uninterruptable power supply) is used when power failures occur (e.g; diesel generator)

redundancy plans - a reserve system for if critical systems go wrong or shut down

  • extra systems that can take over if the main system shuts down (takes data from backups)
  • The three main types of redundancy are hardware, software and data

testing - ensuring that systems are reliable enough before they are used. Testing can include beta testing, unit testing, validation testing and volume testing

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Computing encompasses the essential principles and components of computer systems, serving as the foundation for modern technology and information processing. Understanding these fundamentals is crucial for designing, developing, and utilizing advanced computational solutions. If you want to indulge more in technical subjects, then CETPA Infotech is best for every domain. Join their best tableau training in Noida, and for more information, visit to their official website.

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