Introduction - If you have any usage issues, please Google them yourself
This shows how to read the A2D converter and display the
* High order parts on the 4 bit LED display.
* The pot on the Low Pin Count Demo board varies the voltage
* coming in on in A0.
*
* The A2D is referenced to the same Vdd as the device, which
* is nominally is 5V. The A2D returns the ratio of the voltage
* on Pin RA0 to 5V. The A2D has a resolution of 10 bits, with 1023
* representing 5V and 0 representing 0V.