Secondary storage devices can only store data, but they cannot perform

Secondary storage only keeps data and cannot perform arithmetic or logical operations.

Arithmetic operations are done by the processor, not by storage.

Logical operations likewise take place in the processor.

Fetch operations occur during instruction handling, but the real limit covers both arithmetic and logic.

Storage devices simply hold data until it is read or written.

Add-on: only the arithmetic logic unit inside the processor performs these operations.