On Mon, May 4, 2009 at 7:10 PM, Jan-Erik Soderholm < jan-erik.soderholm@telia.com> wrote: > > The principal is the same as described there, only that you need 10x10 > pins, > > Why not 10 + 10 (=20) pins ? > You shouldn't need 100 pins... Eh, I meant matrix, of course it is 10+10=20 as algebric :-) Thanks for the note! Tamas -- http://www.mcuhobby.com -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist