Unit 3

Question	Answer
Examples Of Encoding Data	Sex - M (Male) / F (Female) Techer initials - JS (John Smith) Airline codes on airport departure boards - BA (British Airways)
Advantages Of Encoding Data	It saves time There are fewer characters so less space is needed Less space is needed, so it is often faster to access coded data. There is less chance of human typographical error
Advantages Of Storing Data Using ICT	It can be cheaper Less money is spent on filing cabinets Easier and quicker to transfer or backup data.
Disadvantages Of Storing Data Using ICT	Training is needed to show staff how to use computers, This can be expensive The ease of transfering data is a security risk Protection from hackers is needed
Batch Total	Checks that something is not missing by adding together a number field in different records and checking the total
Hash Total	Exactly the same as batch total, but the field checked is meaningless
Double Keying	Data is entered twice to check that both sets of data matches
Visual Check	Also known as proof reading (Double-checking something)
Parity Check	Checks that data is correct when it is sent somewhere
PIR	Passive Infra-red
Advantages Of Data Logging	Data logging is more accurate and no one will forget a reading
Disadvantages Of Data Logging	The equiptment can be expensive and would go wrong
Advantages Of Control Systems	Robots can be put into dangerous situations and no not need to take breaks
Disadvantages Of Control Systems	Assembely line jobs can be lost and robots can be expensive to repair
Advantages Of Compression	Files load quicker Download time is less You can store more files because the file size is smaller
Disadvantages Of Compression	Images, movies and sounds are of a lower quality It can be expensive to buy the best compression software
URL	Uniform resource locator
House style	How the website uses image, colour ect to portray their organisation
Audience	Who the website is aimed at
Website Size	How many pages there are on the website
Website Techniques	What design skills were used in producing the web pages
Interactive Website Features	Online forums Quiz/Questionnaire Email Games
Website Templates	Master pages enable you to create a basic outline of how each page on your site will look
Home Page	The first page visitors will see and should link to other pages
Golden Triangle	An eye tracking study has shown that when we use search engines, out eyes focus on a certain area of the screen which is knows as the golden triangle
Hyperlinks	Hyperlinks enable you move from one page to another
HTML	Hyper text markup language
Web Server	Stores webpages on the internet
RGB	Red, green and blue
Advantages Of Using RGB Hexidecimal Colour Codes	Colour numbers give a standard way of displaying colour with all web browsers A web designer knows that using these numbers will give the same colour on all browsers
Disadvantages Of Using RBG Hexidecimal Colour Codes	Six digit numbers can be difficult to remember, but there are websites whch help you find the correct colour number
Advantages Of Using Webpages	Multimedia like video and sound can be watched or listened to at any time Hyperlinks make it easy for anyone to find different kinds of information Anybody can publish their ideas on their own webpage
Disadvantages Of Webpages	Videos and sound can take a long time to download without broadband connection Advertising banners could be annoying People without computers cannot access web pages
Advantages Of Presentation Software	Video and sound can be added to make presentations interesting Design templates mean that you can create a presentation quickly Presentations can be uploaded to the internet and viewed at any time
Disadvantages Of Presentation Software	Video will take a long time to download if the presentation is placed ont he internet Too many animations or transitions can be annoying and unprofessional If too many design templates are used, all presentations will look the same
MIDI	Musical instrument digital interface
Where Multimedia Is Used	Education Entertainment Buisness Wider society
Multimedia Software Allows For...	Digital photographic editing Movie making Animation Music Sound Keyword Quizzes Quizzes Questionnaires Games Links
Bitmap	Made up of lots pixels
Vector	Store information in geometrical objects
BMP	BitMaP
JPEG	Joint Photographic Experts Group
GIF	Graphics Interchange Format
TIFF	Tagged Image File Format
EPS	Encapsulated Postscript
LAN	Local Area Network
WAN	Wide Area Network

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	Created by JamesRushton about 9 years ago