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36 Cards in this Set
- Front
- Back
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Simulation Modelling
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Producing a series of mathematical equations which may be used to mimic a real situation
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Advantages of Simulation Modelling |
Cheaper- can use a model rather than cars/planes Safer Saves time- can predict the future Possible to experience lots of situations |
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Disadvantages of simulation modelling
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Difference between simulation and reality Accuracy of rules and variables Some situations are hard to model |
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Components of simulation modelling
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Input values Variables Constants Constraints Rules |
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Flat file database
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A way of storing data in a list or single table
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Relational database
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Database where the data is held in tables with relationships established between them. The software is used to set up and hold the data as well as to extract and manipulate the stored data
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Copyright, Designs and Patents Act
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An act which makes it an offence to copy or steal software
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Consequences of breaking the Copyright, Designs and Patents Act |
An unlimited fine and up to 10 years in prison |
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Computer Misuse Act 1990
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An act which makes illegal a number of activities such as deliberately planting viruses, hacking and using ICT equipment for fraud etc.
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Data Protection Act 1998
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Law to protect the individual against the misuse of personal data
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Personal Data
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Data about a living, identifiable person, which is specific to that person |
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Data subject
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The living individual whom the personal information is about
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Information Commissioner
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the person responsible for enforcing the data protection act. The also promote good practice and make everyone aware of the implications of the act
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How to make software less stressful to use
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Ensure software is bug free, ensure font sizes make it easy to read, software must be intuitive, help screens tell the user what to do |
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RSI
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Repetitive Strain Injury. A painful muscular condition caused by repeatedly using certain muscles in the same way
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Back ache
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Caused by sitting with incorrect posture
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Preventing back ache
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Use an adjustable chair Ensure adjustment of chair is suitable for height Sit up straight with feet flat on chair Ensure screen is lined up and tilted at an appropriate angle |
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Preventing RSI |
adjust chair to suitable position make sure there is enough space to work carefully use a document holder use an ergonomic keyboard/mouse use wrist rest |
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Eye strain
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Caused by using the screen for long periods and causes blurred vision and headaches |
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Preventing eye strain
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Keep screen clean Use appropriate lighting Take regular breaks Have regular eye tests Ensure you are not sitting too close to the screen |
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Command line
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Type of HCI where you have to type in commands in order to get the computer to do something
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Advantages of Command line
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Quicker- in some instances you can do a task quicker by typing a command line rather than using all the features of windows
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Disadvantages of Command line
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Very difficult for beginners to use Have to remember instructions/commands |
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Graphical user interface (GUI)
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Type of HCI which, instead of typing commands, you enter them by pointing and clicking at objects on the screen |
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Advantages of GUI's
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No language needed Use of icons suitable for novice users Easier to use a mouse than type commands |
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Disadvantages of GUI's
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More memory needed Increased processing requirements |
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Voice/speech recognition systems
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Allow you to enter data via a microphone directly into the computer
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Advantages of voice recognition software
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Faster than typing 99% accuracy Cheap |
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Disadvantages of voice recognition software |
Takes a while to get used to Not accurate at first as you need to train the system about your voice Errors due to background noise Does not work with all database software |
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Biometric devices
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ICT systems that can recognise a person by certain biological properties of that person such as fingerprints and retina scanning
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The internet |
A network of networks enabling people to exchange and share data |
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Advantages of the internet
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more methods of cheap communication such as email ability to listen to almost any radio station from around the world ability to send and receive files ability to run/download games ability to research information |
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LAN
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Local Area network- a network where the linked hardware is confined to a single office or site and where all wires and other devices needed for the LAN are owned by the organisation
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WAN
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Wide Area network- a network where the hardware is spread over a wide geographical area and where the organisation does not own the telecommunications equipment used
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Intranet
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A private network that uses the same technology as that used by the internet for the sending of messages around the network. The main use of an intranet is to share organisational information and share resources.
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Extranet
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The use of an intranet is restricted to employees of the organisation, whereas an extranet can be used by customers, suppliers and other partners. |
