A fully automatic coffee machine (1) includes an operating unit (2) having at least one touch sensor (102) for generating an operating signal, and a signal-conductor (20) to conduct the operating signal to a logic unit (202) connected to a coffee-producing assembly. The touch sensor (102), signal-conductor (20) and logic unit (202) are arranged on a common printed circuit board (10). The logic unit (202) is arranged in a logic section (200) of the printed circuit board (10) and the touch sensor (102) is arranged in a sensor section (100) on the printed circuit board (10). The logic section (200) integrally transitions into the sensor section (100), and is embodied as a logic unit flap which is released from the sensor section (100), such that and is delimited from the sensor section (100) by at least one recess (204) in the printed circuit board such that the logic section (200) is not deformed by deformation of the sensor section (100).