The CPU has a set of built-in operations (its instruction set) that is far richer than with the Turing machine, including the arithmetic, logic, interrupt facilities, and memory access:
devices: adders , subtractors , comparators , multipliers , dividers , multiplexers , decoders , and so on.
ability to branch to another part of a program, if the binary integer in some register is equal to zero (conditional branch),
stack operations, etc.
The CPU can interpret the contents of memory either as instructions or as data according to the fetch-execute cycle.
The von Neumann Machine: