Abstract: A digital arrangement for controlling a gas or steam turbine in which operating parameters of the turbine are sensed at a regular rate. Control parameters are then calculated from the operating parameters by at least one control and regulating program with predetermined reference values. The turbine is controlled and monitored in operation, in accordance with the calculated control parameters for the purpose of safeguarding against excess speed or surging. At least two computer systems are operated in parallel and at different speeds, and communications prevail between these two computer systems. The first of the computer systems is operated at a substantially rapid rate and with a limited supply of commands, together with an individual control and regulating program having a set of reference values. The second computer system is operated at a slower rate than the first computer system and with a greater supply of commands.