Hi Henrik

For the next exercise, why not make the PIC ask three questions like:Num1: (You input whatever) Operator: (You input +, - / or *) Num2: (You input whatever)
Just to clarify: When I turn the Serial Communicator on, the PIC will send a request to the Communicator for NUM1, when I send that number, the PIC then asks the Comunicator for an 'operator' + - */ when the operator arrives the PIC then asks for NUM2 and then present the result.

That should make it a little easier to sort out - I think.


I'll give it a go.

Dave