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\hypertarget{index_intro_sec}{}\section{Introduction}\label{index_intro_sec}
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\hypertarget{index_intro_sec}{}\section{Introduction}\label{index_intro_sec}
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\begin{DoxyVerb} The module contains:
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\begin{DoxyVerb} The main purpose of this module is to be fed with ASCI symbol codes and it will output word lighting up the exact segments
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-# Input data register to hold the ASCII symbol codes
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on the 14-segment display to visualize the ASCII character. Current implementation uses input register to store the input code.
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-# Decoder to translate the code to 14-segment display word
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-# here is also the driver
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ASCII symbols are coded in Byte having values from 0x00 to 0x7F. This range covers all the symbols in the decoding table.
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\end{DoxyVerb}
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The range is doubled because the symbols may be lit with DP on or off. More information may be found in MAX6955 datasheet.
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\hypertarget{index_install_sec}{}\section{Installation}\label{index_install_sec}
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Follows small revised quote of the most descriptive part related to decoding. Not applicable words are removed.
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\hypertarget{index_step1}{}\subsection{Step 1\+: Opening the box}\label{index_step1}
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\begin{DoxyVerb} etc... \end{DoxyVerb}
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... includes 104-character ASCII font maps for 14-segment... . The characters follow the standard ASCII font, with the
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addition of the following common symbols: GBP, EUR, Yen, degree, micro, plus/minus, arrow up, and arrow down.
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Seven bits represent the 104-character font map; an 8th bit is used to select whether the decimal point (DP) is lit.
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source: https://datasheets.maximintegrated.com/en/ds/MAX6955.pdf
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\end{DoxyVerb}
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\hypertarget{index_port_disp_data}{}\section{Display Data Out}\label{index_port_disp_data}
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\begin{DoxyVerb} Typically the data fed to display (single or multiple) is provided for single display at a time.
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If multiple displays are required disp_sel signal must be provided (according typical dynamic display indication).
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\end{DoxyVerb}
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\hypertarget{index_disp_data_bit_mapping}{}\subsection{Display Segment Bit Mapping}\label{index_disp_data_bit_mapping}
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\tabulinesep=1mm
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\begin{longtabu} spread 0pt [c]{*{16}{|X[-1]}|}
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\hline
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\rowcolor{\tableheadbgcolor}\PBS\centering \textbf{ Bit Number }&\PBS\centering \textbf{ 14}&\PBS\centering \textbf{ 13}&\PBS\centering \textbf{ 12}&\PBS\centering \textbf{ 11}&\PBS\centering \textbf{ 10}&\PBS\centering \textbf{ 9}&\PBS\centering \textbf{ 8}&\PBS\centering \textbf{ 7}&\PBS\centering \textbf{ 6}&\PBS\centering \textbf{ 5}&\PBS\centering \textbf{ 4}&\PBS\centering \textbf{ 3}&\PBS\centering \textbf{ 2}&\PBS\centering \textbf{ 1}&\PBS\centering \textbf{ 0 }\\\cline{1-16}
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\endfirsthead
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\hline
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\endfoot
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\hline
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\rowcolor{\tableheadbgcolor}\PBS\centering \textbf{ Bit Number }&\PBS\centering \textbf{ 14}&\PBS\centering \textbf{ 13}&\PBS\centering \textbf{ 12}&\PBS\centering \textbf{ 11}&\PBS\centering \textbf{ 10}&\PBS\centering \textbf{ 9}&\PBS\centering \textbf{ 8}&\PBS\centering \textbf{ 7}&\PBS\centering \textbf{ 6}&\PBS\centering \textbf{ 5}&\PBS\centering \textbf{ 4}&\PBS\centering \textbf{ 3}&\PBS\centering \textbf{ 2}&\PBS\centering \textbf{ 1}&\PBS\centering \textbf{ 0 }\\\cline{1-16}
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\endhead
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\PBS\centering Display Segment&\PBS\centering dp&\PBS\centering m&\PBS\centering l&\PBS\centering k&\PBS\centering j&\PBS\centering i&\PBS\centering h&\PBS\centering g2&\PBS\centering g1&\PBS\centering f&\PBS\centering e&\PBS\centering d&\PBS\centering c&\PBS\centering b&\PBS\centering a \\\cline{1-16}
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\end{longtabu}
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Note that there is no standard way to name the segments. Current data bits correspondt to display segments according this picture\+:
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