Display and operating apparatus appertaining to building systems engineering, comprising a touchscreen element, a memory element (4, 6) for storing image information, a processing device and additionally a camera or a card reader, wherein the display and operating apparatus is adapted: - to connect to actuators (9, 10, 11, 12) via the processing device and a bus system, wherein each actuator is assigned a specific address within the bus system and at least one electrical apparatus (13, 14, 15, 16, 17, 18, 19, 20) situated in a corresponding room of a house is connected to each actuator, wherein the display and operating apparatus is characterized in that it is further adapted: - to carry out at least one recording of a room or of a partial area of a room by means of the built-in camera as internal recording of the room or partial area or by means of the built-in card reader as external recording of the room or partial area, - to store the at least one recording in a memory element (4, 6), - to display on the touchscreen element the at least one room or partial area in the form of the corresponding recording, on which the electrical apparatuses (13 to 20) to be driven for said at least one room or partial area are identifiable, and - for each of the electrical apparatuses: -- via the processing device, to allocate the photograph imaging area of the specific electrical apparatus (13, 14, 15, 16, 17, 18, 19, 20) identifiable on the corresponding recording to the address assigned to the actuator of said electrical apparatus (13, 14, 15, 16, 17, 18, 19, 20), and -- upon the photograph imaging area of the electrical apparatus being touched, via the processing device, to implement a function of the actuator of the electrical apparatus and to directly drive the electrical apparatus (13, 14, 15, 16, 17, 18, 19, 20). - to connect to actuators (9, 10, 11, 12) via the processing device and a bus system, wherein each actuator is assigned a specific address within the bus system and at least one electrical apparatus (13, 14, 15, 16, 17, 18, 19, 20) situated in a corresponding room of a house is connected to each actuator, - to carry out at least one recording of a room or of a partial area of a room by means of the built-in camera as internal recording of the room or partial area or by means of the built-in card reader as external recording of the room or partial area, - to store the at least one recording in a memory element (4, 6), - to display on the touchscreen element the at least one room or partial area in the form of the corresponding recording, on which the electrical apparatuses (13 to 20) to be driven for said at least one room or partial area are identifiable, and - for each of the electrical apparatuses: -- via the processing device, to allocate the photograph imaging area of the specific electrical apparatus (13, 14, 15, 16, 17, 18, 19, 20) identifiable on the corresponding recording to the address assigned to the actuator of said electrical apparatus (13, 14, 15, 16, 17, 18, 19, 20), and -- upon the photograph imaging area of the electrical apparatus being touched, via the processing device, to implement a function of the actuator of the electrical apparatus and to directly drive the electrical apparatus (13, 14, 15, 16, 17, 18, 19, 20). -- via the processing device, to allocate the photograph imaging area of the specific electrical apparatus (13, 14, 15, 16, 17, 18, 19, 20) identifiable on the corresponding recording to the address assigned to the actuator of said electrical apparatus (13, 14, 15, 16, 17, 18, 19, 20), and -- upon the photograph imaging area of the electrical apparatus being touched, via the processing device, to implement a function of the actuator of the electrical apparatus and to directly drive the electrical apparatus (13, 14, 15, 16, 17, 18, 19, 20).