Yes, a calculator is considered a data processor. Anything that can use or hold data is considered to be a data processor. So yes, a calculator is a data processor.

Data run's through a processor

CPU = Core Processing Unit

but yes CPU is the same thing as a Processor or ''Data Processor''

A computer is known as a data processor because that's what it does. Process data (programs)

function of the processor is to process data

Additional data and programs not being used by the processor are stored in