Which ever you like the most...
Central Processing Unit (CPU.). Is the brain or the heart of a computer. Is also known as Microprocessor and Consist of three (3) Units:
A): Control Unit (CU)
B): Arithmetic Logic Unit ( ALU)
C): Main Memory Unit ( MMU)
Therefore, Your Answer ====> Microprocessor, or The System Unit contains the Central Processing Unit (CPU.).
Hope that helps!!!! : )
