The data processor function of a PCM receives the data from the input signal processing section and compares it to in the memory

The data processor function of a PCM receives the data from the input signal processing section and compares it to Standardized Data in the memory

Explanation:

PCM processor is the device that is used in the automobiles to analyze the performance of the engine. It works like the brain of the computer.  Whenever user starts the vehicle, this processor retrieve the input from all the sensors installed in the vehicle. This input data is compared with the standardized information stored in the memory. The input data has been analyzed as per standardized information and generate alerts in case of any system failure or fault.

Standardized data is the data that is set used as threshold value that is used to compare with the input data. If input data is according to the standardized data it means there is no error in the system.