A simulator for an agricultural working machine, comprising at least one display unit, wherein the at least one display unit is coupled to an operating unit and at least one computing unit and wherein the agricultural working machine to be simulated comprises adjustable working units and operating elements which carry out the adjustment of the working units, characterized in that a software module is stored in the computing unit and the software module represents at least the process model of crop processing processes to be carried out by the agricultural working machine and the machine behaviour resulting from the crop processing process, and the display unit simulates a realistic operator interface in a manner such that, in addition to visualising the real operating elements, the crop processing process and the machine behaviour are visualised, wherein the process model is visualised in the display unit and can be edited by means of the operating unit, wherein the type of the agricultural working machine to be simulated can be selected and the software modules to be at least respectively activated which relate to the electronic on-board information system, the electronic machine optimization system and the automated driving system correspond to the original software modules actually used in the agricultural working machine, wherein the computing unit comprises software modules for simulating the process model, the machine behaviour and the operating units associated with the respective agricultural working machine, and wherein the software modules replicate at least the electronic on-board information system and/or the electronic machine optimization system and/or the automated driving system, wherein at least the software modules, the display unit and the stored process model or models are linked to one another in the software via a virtual CAN bus. a software module is stored in the computing unit and the software module represents at least the process model of crop processing processes to be carried out by the agricultural working machine and the machine behaviour resulting from the crop processing process, and the display unit simulates a realistic operator interface in a manner such that, in addition to visualising the real operating elements, the crop processing process and the machine behaviour are visualised, wherein the process model is visualised in the display unit and can be edited by means of the operating unit, wherein the type of the agricultural working machine to be simulated can be selected and the software modules to be at least respectively activated which relate to the electronic on-board information system, the electronic machine optimization system and the automated driving system correspond to the original software modules actually used in the agricultural working machine, wherein the computing unit comprises software modules for simulating the process model, the machine behaviour and the operating units associated with the respective agricultural working machine, and wherein the software modules replicate at least the electronic on-board information system and/or the electronic machine optimization system and/or the automated driving system, wherein at least the software modules, the display unit and the stored process model or models are linked to one another in the software via a virtual CAN bus.