\documentclass[10pt,a4paper]{article}

% Packages
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\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{NeelsK}
\pdfinfo{
  /Title (sarl-exam.pdf)
  /Creator (Cheatography)
  /Author (NeelsK)
  /Subject (SARL Exam Cheat Sheet)
}

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% This two commands together give roughly
% the right line height in the tables
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% 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
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% Font and Colours
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\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{SARL Exam Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{NeelsK} via \textcolor{DarkBackground}{\uline{cheatography.com/22736/cs/4729/}}}
\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}NeelsK \\
  \uline{cheatography.com/neelsk} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 11th May, 2016.\\
   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*}{3}

\begin{tabularx}{5.377cm}{p{0.62655 cm} p{0.4177 cm} x{2.25558 cm} x{0.87717 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{4}{x{5.377cm}}{\bf\textcolor{white}{Units}}  \tn
% Row 0
\SetRowColor{LightBackground}
pico & p & ÷1 000 000 000 000 & 10\textasciicircum{}-12\textasciicircum{} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
nano & n & ÷1 000 000 000 & 10\textasciicircum{}-9\textasciicircum{} \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
micro & µ & ÷1 000 000 & 10\textasciicircum{}-6\textasciicircum{} \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
milli & m & ÷1 000 & 10\textasciicircum{}-3\textasciicircum{} \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
kilo & k & •1 000 & 10\textasciicircum{}3\textasciicircum{} \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
mega & M & •1 000 000 & 10\textasciicircum{}6\textasciicircum{} \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
giga & G & •1 000 000 000 & 10\textasciicircum{}9\textasciicircum{} \tn 
% Row Count 7 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}----}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{p{0.66832 cm} p{0.58478 cm} x{1.92142 cm} x{1.00248 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{4}{x{5.377cm}}{\bf\textcolor{white}{Resistor Color Codes}}  \tn
% Row 0
\SetRowColor{LightBackground}
Color & Digit & Multiplyer & \seqsplit{Tolerance} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
Black & 0 & • 1 &  \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
Brown & 1 & • 10 & 1\% \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
Red & 2 & • 100 & 2\% \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\seqsplit{Orange} & 3 & • 1000 &  \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
\seqsplit{Yellow} & 4 & • 10 000 &  \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
Green & 5 & • 100 000 &  \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
Blue & 6 & • 1 000 000 &  \tn 
% Row Count 8 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\seqsplit{Violet} & 7 & • 10 000 000 &  \tn 
% Row Count 9 (+ 1)
% Row 9
\SetRowColor{white}
Grey & 8 & • 100 000 000 &  \tn 
% Row Count 10 (+ 1)
% Row 10
\SetRowColor{LightBackground}
White & 9 & • 1 000 000 000 &  \tn 
% Row Count 11 (+ 1)
% Row 11
\SetRowColor{white}
Gold &  &  & 5\% \tn 
% Row Count 12 (+ 1)
% Row 12
\SetRowColor{LightBackground}
\seqsplit{Silver} &  &  & 10\% \tn 
% Row Count 13 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}----}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Ohm's Law}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{V = IR \newline % Row Count 1 (+ 1)
Volts = Amperes • Ohms% Row Count 2 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Kirchoff's Laws}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{{\bf{Kirchoff's Current Law:}} \newline % Row Count 1 (+ 1)
I`IN`=I`OUT` \newline % Row Count 2 (+ 1)
{\bf{Kirchoff's Voltage Law(1)}} \newline % Row Count 3 (+ 1)
The voltage between any two points in a circuit is equal to the sum of the voltage drops along any path connecting those points \newline % Row Count 6 (+ 3)
{\bf{Kirchoff's Voltage Law(2)}} \newline % Row Count 7 (+ 1)
The sum of the voltage drops around any closed circuit is zero% Row Count 9 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Resistors in Series}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{V`1`=IR`1`   {\emph{Ohm's Law}} \newline % Row Count 1 (+ 1)
V`2`=IR`2` \newline % Row Count 2 (+ 1)
V`TOTAL`=V`1`+V`2` {\emph{Kirchoff's Voltage Law}} \newline % Row Count 3 (+ 1)
∴V`TOTAL`=IR`1` + IR`2` \newline % Row Count 4 (+ 1)
∴V`TOTAL`=I(R`1`+R`2`)% Row Count 5 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Resistors in Parallel}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{I`1`=V/R`1`  {\emph{Ohm's Law}} \newline % Row Count 1 (+ 1)
I`2`=V/R`2` \newline % Row Count 2 (+ 1)
I`TOTAL`=I`1`+I`2`  {\emph{Kirchoff's Current Law}} \newline % Row Count 3 (+ 1)
∴I`TOTAL`=V/R`1` + V/R`2` \newline % Row Count 4 (+ 1)
Applying Oh's Law to the whole circuit: \newline % Row Count 5 (+ 1)
\seqsplit{V/R`PARALLEL`=I`TOTAL`=V/R`1`+V/R`2`} \newline % Row Count 6 (+ 1)
\seqsplit{∴1/R`PARALLEL`=1/R`1`+1/R`2`}% Row Count 7 (+ 1)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.51041 cm} x{1.19002 cm} x{1.87657 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Bands}}  \tn
% Row 0
\SetRowColor{LightBackground}
160 Meter & 1.8 MHz &  \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
80 Meter & 3.5 MHz &  \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
40 Meter & 7 MHz &  \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
20 Meter & 14 MHZ &  \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
17 Meter & 18 MHz &  \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
15 Meter & 21 MHz &  \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
12 Meter & 24 MHz &  \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
10 Meter & 28 MHz &  \tn 
% Row Count 8 (+ 1)
% Row 8
\SetRowColor{LightBackground}
6 Meter & 50 MHZ &  \tn 
% Row Count 9 (+ 1)
% Row 9
\SetRowColor{white}
2 Meter & 144 MHz & 144-146 MHz \tn 
% Row Count 10 (+ 1)
% Row 10
\SetRowColor{LightBackground}
70 cm & 420 MHz & 430-440MHz \tn 
% Row Count 11 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}