Neil,
        Dallas has a chip that was built exactly for this, it's the DS1780,
check it out at www.dalsemi.com.

Ricardo Seixas

>I have a need for measuring voltages between 4 & 6V DC. Does anyone have
>any pointers so I can get started. The reason behind this is to measure
>voltage and temperature inside my PC. I've been having trouble with
>voltages on my PC and would like to shutdown the system when things get
>way out of line.
>
>The 16F84 will communicate with the PC via RS232, it will use a DS1802
>and an LTC1298 ADC. The ADC is already on a Micromint PICSTICK I have.
>
>Thanks
>
>--
>Neil Cherry     http://home.att.net/~ncherry    ncherry@worldnet.att.net
>
>