The Central Processing Unit, or CPU for short, is the brain of the desktop computer.
The Control Unit or the CU and the Arithmetic and Logic Unit also known as the ALU are the subsystems of the core unit. When these two are combined, the CPU is created.
The CPU has many input and output devices including the 32-bit microprocessor, the Read Only Memory or the ROM and the Random Access Memory popularly known as RAM. The CPU has two slots for its memory: the Main memory and the Secondary memory. These two memory slots have different purposes and both are important to make the CPU run.
