In some embodiments, the invention includes a system having a memory controller, a bus, and first and second memory devices. These items of first and second information are processed such that the first information can be displayed in a first display region the display unit and the second information can simultaneously be displayed in a second display region of the display unit, with a display of the information in one of the display regions causing no modification of the size of the other display region. For the combined arrangement of the processing unit and the wash unit, either a batch processing unit or a monoserial processing unit can be employed. In an example, the dominant frequency or other prominent frequency emanating from an internal-combustion chamber of a turbine engine is detected and used to determine the fuel-to-air ratio in the chamber.