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\author{Steak Electronics}
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  \section{60Hz Divider}}



\subsection{Counting the Hz}
pseudo code goal:
\begin{verbatim}
Using 1Hz signal
Start counting 1MHz every 1Hz
when next cycle is received,
   display count
   start counting again
\end{verbatim}
That's all the objective is here. Easy with a micro, but goal is to complete using cmos or 74 logic.

 4553 x 5 
 74hct132
 1MHz clock (or 6MHz clock), or some variation thereof
 jk flip flop
 74376  - quad jk flip flop
 7476 - jk flip flop
1mhz clk will be main counter,
6 hz or 1 hz will be latch / reset

\subsection{MAX7219 8 digit 7 LED segment Display Driver}
Basic code tested with this was the LedControl arduino library.

/begin{verbatim}
/*
 Now we need a LedControl to work with.
 ***** These pin numbers will probably not work with your hardware *****
 pin 12 is connected to the DataIn 
 pin 11 is connected to the CLK 
 pin 10 is connected to LOAD 
 We have only a single MAX72XX.
 */
\end{verbatim}
Some of the lines have to be edited to allow for all digits to be read, and
also to lower intensity of display. I think also a component package (dark 
grey clear plastic bag) in front of the leds with intensity 1 is about right.


\subsection{CPLD Programming}
Using the XC9500XL series. This chip has some limitations - which are good.

As you get faster clocks, you need bigger registers to handle parsing the clocks.
bigger registers, use more power.



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