Adi, I've used the LM34 (F vs C) in several applications. I'd recommend
using a 16C71 with it's 8-Bit A/Ds. If you have to use a 16x84, there are
several A/Ds with a 3-wire interface. I have a project where I use a MAX186
12-Bit, 8-channel, A/D. This has a 3-wire interface. Five channels are
assigned to 5 temperature zones, 2 for indoor and outdoor humidity, and 1
for barometric pressure. Though I use a 16C74 in this case, you can easily
interface it to a 16x84.

   - Tom

At 08:32 PM 10/8/97 -0500, you wrote:
>>What kind of temperature probe?  Is it a thermistor, thermocouple,
>>RTD, or what?
>
>An LM35... Originally I wanted to connect the sensor to an ICL7106 (A/D with
>built-in display driver. I thought the LM35 would make the design much
>easier (with the ICL7106).
>
>>and.. What kind of accuracy do you need?
>
>0.5 Celcius is just fine.
>
>>HOWEVER if you are a newbee I wouldn't recommend this as your first
>>project.  Try something simple.  Make a light light or a beeper honk.
>
>:-)  Got to learn somehow. I did programming with a C64 a long time ago and
>I worked a bit with HC705 and HC11 3 or 4 years ago. I've looked at PIC's
>when I couldn't find the HC705 version I needed to finish my project.
>Housebuilding and marriage happened and it took me a few years to get back
>into working with microcontrollers and doing electronic projects.
>
>There are two projects in the making, the thermometer... an indoor outdoor
>unit with min/max memory and a clock for the reception of the WWVB time signal.
>
>Getting the light on the 7 segment display to shine will be my very first
>project with the PIC, though :-)
>
>Regards,
>Adi
>
>