Don't think it has changed since the first one. Von Neumann created the first program-stored computer. It included a cpu.

<The CPU comprises a data processing unit and a program control unit. The data processing unit contains an arithmetic logic unit and some internal registers, and the program control unit contains buffer registers that hold instructions and circuitry for decoding those instructions and generating the requisite control signals that govern the operation of the aggregation in Figure 1.>

GLTA Opty

http://researchweb.watson.ibm.com/jo...