\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{JMR}
\pdfinfo{
  /Title (csci-final.pdf)
  /Creator (Cheatography)
  /Author (JMR)
  /Subject (CSCI Final Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{A3A3A3}
\definecolor{LightBackground}{HTML}{F3F3F3}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{CSCI Final Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{JMR} via \textcolor{DarkBackground}{\uline{cheatography.com/36949/cs/11642/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}JMR \\
  \uline{cheatography.com/jmr} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 1st May, 2017.\\
   Updated 1st May, 2017.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% 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*}{4}

\begin{tabularx}{3.833cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{Machine Cycle/Processing Cycle}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{3.833cm}}{Fetch - Retrieves the next program instruction from memory.} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{3.833cm}}{Decode - Determines what the program is telling the compy to do.} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{3.833cm}}{Execute - Performs the requested instruction.} \tn 
% Row Count 5 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{3.833cm}}{Store - Stores the results to an internal register or to memory.} \tn 
% Row Count 7 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{Basic HTML Structure}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{3.833cm}}{\textless{}!DOCTYPE html\textgreater{} \newline \textless{}html\textgreater{} \newline  \textless{}head\textgreater{} \newline   \textless{}title\textgreater{}website title\textless{}/title\textgreater{} \newline  \textless{}/head\textgreater{} \newline  \textless{}body\textgreater{} \newline   content of website ... \newline  \textless{}/body\textgreater{} \newline \textless{}/html\textgreater{}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{Random Bytes}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{3.833cm}}{*Bit = Smallest piece of data a compy works with \newline % Row Count 1 (+ 1)
*8 Bits = 1 byte aka a single unit of storage \newline % Row Count 2 (+ 1)
*Binary Data = written in 1s and 0s% Row Count 3 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{x{1.47619 cm} x{1.95681 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{System Unit Main Components}}  \tn
% Row 0
\SetRowColor{LightBackground}
Motherboard & Internal Speaker \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
CPU & Drive Bays \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
Power Supply & Expansion Slots \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{2}{x{3.833cm}}{Cooling Fan} \tn 
% Row Count 4 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{x{1.47619 cm} x{1.95681 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Abbreviations}}  \tn
% Row 0
\SetRowColor{LightBackground}
CSS - Cascading Style Sheet & HTML - Hyper Text Markup Language \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
CPU - Central Processing Unit & VoIP - Voice over Internet Protocol \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
LAN - Local Access Network & WAN - Wide Area Network \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
POST - Power-on Self-Test & CMOS - Comp. Metal Oxide Semiconductor \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{3.833cm}}{BIOS - Basic input/Output Sys.} \tn 
% Row Count 9 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{x{1.92248 cm} x{1.51052 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{Access 2013}}  \tn
% Row 0
\SetRowColor{LightBackground}
4 Objects = Tables, Forms Queries \& Reports & Rows = Records, Columns = Fields \tn 
% Row Count 2 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{x{1.7165 cm} x{1.7165 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{JavaScript/HTML Thing}}  \tn
% Row 0
\SetRowColor{LightBackground}
\textless{}form\textgreater{}\textless{}/form\textgreater{} & \textless{}input\textgreater{}\textless{}/input\textgreater{} = within form \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
"document.write" to print & alert - simple popup window w/ ok button \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
onClick = event that's triggered when a user clicks something & \textless{}script\textgreater{}\textless{}/script\textgreater{} \tn 
% Row Count 8 (+ 4)
% Row 3
\SetRowColor{white}
Conditional Statements (if/else) & if (something happens)\{takes action\} \tn 
% Row Count 10 (+ 2)
% Row 4
\SetRowColor{LightBackground}
Call Function by using its name \& listing constants & else\{takes a different action\} \tn 
% Row Count 13 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{6 Steps of Booting a System}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{3.833cm}}{1.) BIOS (Basic Input/Output System) is load} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{3.833cm}}{2.) Power-on self test (POST) is completed} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{3.833cm}}{3.) OS is loaded} \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\mymulticolumn{1}{x{3.833cm}}{4.) System Configuration is accomplished} \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{3.833cm}}{5.) System utilities are loaded} \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
\mymulticolumn{1}{x{3.833cm}}{6.) User is authenticated} \tn 
% Row Count 6 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{Memory Bank}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{3.833cm}}{RAM (Random Access Memory) \newline % Row Count 1 (+ 1)
*Volatile \newline % Row Count 2 (+ 1)
*Temporarily stores data \& instructions for CPU \newline % Row Count 3 (+ 1)
Cache Memory \newline % Row Count 4 (+ 1)
*Small unit of ultrafast memory built into or near the processor \newline % Row Count 6 (+ 2)
*Stores frequently or recently access info \newline % Row Count 7 (+ 1)
*3 Lvls. = L1 (primary), L2 (secondary), L3 \newline % Row Count 8 (+ 1)
ROM (Read-only Memory) \newline % Row Count 9 (+ 1)
*Nonvolatile \newline % Row Count 10 (+ 1)
*BIOS - 1st code when compy is powered on \newline % Row Count 11 (+ 1)
*CMOS - Starts the power-on self-test \newline % Row Count 12 (+ 1)
POST - checks circuitry \& RAM \newline % Row Count 13 (+ 1)
Bootstrap Loader - locates \& loads OS into RAM% Row Count 14 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{x{1.57918 cm} x{1.85382 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{3.833cm}}{\bf\textcolor{white}{HTML Basics}}  \tn
% Row 0
\SetRowColor{LightBackground}
\textless{}h\_\textgreater{} \textless{}/h\_\textgreater{} & Heading (h1-h6) \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\textless{}b\textgreater{}\textless{}/b\textgreater{} & bold \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\textless{}a href="url"\textgreater{}\textless{}/a\textgreater{} & Create a link \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\textless{}img src="filename.jpg"\textgreater{} & Show an Image \tn 
% Row Count 5 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\textless{}ul\textgreater{}\textless{}li\textgreater{}list\textless{}/li\textgreater{}\textless{}/ul\textgreater{} & Unordered, bullet-point list \tn 
% Row Count 7 (+ 2)
% Row 5
\SetRowColor{white}
\textless{}ol\textgreater{}\textless{}li\textgreater{}list\textless{}/li\textgreater{}\textless{}/ol\textgreater{} & Ordered List \tn 
% Row Count 9 (+ 2)
% Row 6
\SetRowColor{LightBackground}
\textless{}table\textgreater{}\textless{}/table\textgreater{} & Define a Table \tn 
% Row Count 10 (+ 1)
% Row 7
\SetRowColor{white}
\textless{}tr\textgreater{}\textless{}/tr\textgreater{} & Table Row within table \tn 
% Row Count 12 (+ 2)
% Row 8
\SetRowColor{LightBackground}
\textless{}th\textgreater{}\textless{}/th\textgreater{} & header cell within table row \tn 
% Row Count 14 (+ 2)
% Row 9
\SetRowColor{white}
\textless{}td\textgreater{}\textless{}/td\textgreater{} & Table cell within table row \tn 
% Row Count 16 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{3.833cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{3.833cm}}{\bf\textcolor{white}{3 Ways to Insert CSS}}  \tn
% Row 0
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{3.833cm}}{1.) External Style Sheet - link to style sheet in the HTML file.} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\mymulticolumn{1}{x{3.833cm}}{2.) Internal Style Sheet - put in the HTML file; put the style section in the header section.} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{3.833cm}}{3.) Inline Styles - Add the style formatting in the desired line by "style=".} \tn 
% Row Count 6 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}