Thanks Tom

If only such service were common everywhere...
I mean that as a compliment!

I am quite new to microprocessors and am not very familiar with much of the terminology. Basically, I need my hand held :roll: (My first microprocessor class.)
What is UART? Where is the RX of the interface ...

I'm currently a Penn State college student taking a microprocessor class. My lab partner and I are building a programmable relay controller using a Dallas DS5000T (fancy Phillips 8051-same pin-outs). The circuit can be seen at www.Rentron.com.
The problem is the 2041 has an interface board attached ...