...are maybe what I need for understanding the procedure of multiplying numbers. I have been to Myke's page and had a look, but I don't quite understand them. Why the rrf? I'm not 'there' yet, I guess... What I would like is to get a simple explanation on multiplying two 8 bit numbers. Cheers, Stig ====================================== Stig Brautaset mailto:sbrautas@c2i.net http://home.c2i.net/sbrautas/index.htm Student of electronics in Oslo, Norway ======================================