Ingo Debus schreef: > If you want to interface a standard 1 * 12 > rotary switch to a microcontroller without additional circuitry you > need 12 inputs. Or 11 resistors and one A/D input. Nowadays even very cheap microcontrollers have A/D. -- Vriendelijke groet, Simon Brouwer -*- nl.openoffice.org -*- http://www.opentaal.org -*-