PDP stands for Programmed Data Processor. Therefore, it means Programmed Data Processor-8. :p

it is the only language programmed and understandable by the computer processor because it is programmed in it.

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)