This application is a digital thermometer reading the ADC and displaying the
result on the MDM-1 (0 to 99.8C in 0.2C steps), on a HD44780 (4 bit mode)
2 line x 16 character LCD display (Lascar Electronics DMX916). The HD44780
shows binary on the top line plus bcd and hex on the bottom.

Link J6 marked A1 should be in the right hand position.

In this application the Vref+ is the supply voltage (+5V) and Vref- is 0V.
The AD22100 ouput temperature in degrees centigrade is calculated by V out
subtract 1.375V and then divide by 2.25mV.

The application is not complete as the 4 bit mode of the HD44780 is not
working and only positive temperatures are readable.  As soon as this is
completed then the code will be posted.  The checksum of the current code is
D048.

The multiplication/division code is generated from the following site:
http://www.piclist.com/cgi-bin/constdivmul.exe.

Jal is provided free of charge and is regularly updated.  If you wish to
support the continued development of the code a donation, in dollars, can
be made to Wouter via http://www.piclist.com/support.
