I'm teaching a math course for elementary school teachers, and today we told them about Reverse Polish Notation, just to make them think about order of arithmetic operations. It would be nice to actually own an RPN calculator, so one could show students that this isn't just an abstract curiosity. Does anyone have an old RPN calculator that they would sell me, or know where I could get one? Dan -- Ceci n'est pas une .signature. -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: Digital signature Url : http://mailman.mn-linux.org/pipermail/tclug-list/attachments/20060719/59889857/attachment.pgp