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% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
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% Document Info
\author{NotJay}
\pdfinfo{
  /Title (wjec-a2-computing-unit-3-6.pdf)
  /Creator (Cheatography)
  /Author (NotJay)
  /Subject (WJEC A2 Computing Unit 3.6 Cheat Sheet)
}

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% Commands
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% Header and Footer
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\noindent
\begin{multicols}{3}
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    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
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\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{WJEC A2 Computing Unit 3.6 Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{NotJay} via \textcolor{DarkBackground}{\uline{cheatography.com/62699/cs/16055/}}}
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\fancyfoot[L]{ \footnotesize
\noindent
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  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}NotJay \\
  \uline{cheatography.com/notjay} \\
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  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 10th June, 2018.\\
   Updated 10th June, 2018.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
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  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
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\end{multicols}}




\begin{document}
\raggedright
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% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{X}
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\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Contemporary approaches to computer communications}}  \tn
% Row 0
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\mymulticolumn{1}{x{5.377cm}}{Voice input - Allows a greater use of spoken natural language in their control, making it more intuitive.} \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Touch screen- Allow for the use of gestures for controlling the device, which is much more intuitive for the average user.} \tn 
% Row Count 6 (+ 3)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Force feedback - Also known as Haptic feedback, gives the user a physical sense that something has changed within the device via vibrations.} \tn 
% Row Count 9 (+ 3)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{Virtual reality - Taking over as many senses as technologically possible to give the user the sense that they have been transported elsewhere. Simulates 3D through 360 degree headtracking.} \tn 
% Row Count 13 (+ 4)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{Augmented reality - Takes the real world as seen through the devices sensors (accelerometers, cameras etc.) and lays digital information over it for a combination of the two.} \tn 
% Row Count 17 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\par\addvspace{1.3em}

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\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Voice input}}  \tn
% Row 0
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Advantages & Disadvantages \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
A much more intuitive experience & Background noise may prevent recognisation \tn 
% Row Count 4 (+ 3)
% Row 2
\SetRowColor{LightBackground}
Allows people with physical disabilities to to use some devices & Accents may not be recognised \tn 
% Row Count 8 (+ 4)
% Row 3
\SetRowColor{white}
No training required if implemented into a work setting & Talking for extended periods of time could cause problems \tn 
% Row Count 11 (+ 3)
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\par\addvspace{1.3em}

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% Row 0
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Advantages & Disadvantages \tn 
% Row Count 1 (+ 1)
% Row 1
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Provides an alternative to loud noises when used as a notification method & Could easily be ignored since it's not hugely invasive \tn 
% Row Count 5 (+ 4)
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\par\addvspace{1.3em}

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\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Touch screen}}  \tn
% Row 0
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Advantages & Disadvantages \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
Use of gestures makes it very intuitive & Not very robust-breaks fairly easily \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
No extra peripherals needed & Loss of accuracy due to selecting things with fingers \tn 
% Row Count 6 (+ 3)
% Row 3
\SetRowColor{white}
Easy to clean unlike traditional keyboard-very hygienic & Large touch screens are a lot more expensive than just a keyboard and mouse \tn 
% Row Count 10 (+ 4)
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\begin{tabularx}{5.377cm}{X}
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\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{System design validation}}  \tn
% Row 0
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\mymulticolumn{1}{x{5.377cm}}{Requirements - Does it meet the specification. Specific requirements must be made in order for this to be measurable} \tn 
% Row Count 3 (+ 3)
% Row 1
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\mymulticolumn{1}{x{5.377cm}}{Performance - Does it respond fast enough for its use. Normally this will have a requirement of it's own} \tn 
% Row Count 6 (+ 3)
% Row 2
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\mymulticolumn{1}{x{5.377cm}}{Robustness - Does it crash frequently or at all. The level required depends on the type of software} \tn 
% Row Count 8 (+ 2)
% Row 3
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\mymulticolumn{1}{x{5.377cm}}{Cost - Has the system come in or on budget. Systems that are more expensive than predicted are rarely seen as successful} \tn 
% Row Count 11 (+ 3)
% Row 4
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\mymulticolumn{1}{x{5.377cm}}{Usability - Is it usable by the end user. This depends on the skill levels of the users and the nature of the solution} \tn 
% Row Count 14 (+ 3)
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\mymulticolumn{1}{x{5.377cm}}{System design validation is the process of testing carried out during a systems life cycle. It occurs before implementation and ensures the system works as intended. If an issue is found the design will be updated and a new or adapted prototype will be built.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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% That's all folks
\end{multicols*}

\end{document}