A short while ago I asked for help via the PIClist on a handicapped project I was struggling to finish. I was designing a 'rotary' knob PIC keyboard to connect to a PC for people who could not use a standard keyboard, yet could still use their fingers to turn a rotary knob. I could do the PIC part but was hopeless on the PC side! I immediately received much varied advice and thro' this list I would like to thank Mike at Mayes UK for his invaluable help. The project will now be of immense help to some who need it. Many Thanks for providing a suitable medium for exchanging practical help between engineers. Stephen H Alsop email: s.ssystems@easynet.co.uk S&S Systems Ltd www: http://easyweb.easynet.co.uk/~s.ssystems