A vacuum pump (10) includes a control device (20) for processing
operational data and operational instructions. Further, the vacuum pump (10)
includes a touch screen (40) serving as display for displaying the operational
data callable from the control device (20) and as input for inputting operational
instructions into the control device (20). The touch screen (40)
includes a display panel (42) and a key panel (44) as display and
the input, respectively, and is connected with the control device (20) via
a data line (36). By combining the display and the input in a single device,
namely the touch screen, the trouble for display and data input is reduced.