The CPU has always been called the 'brain of the computer'. Well, it is not really accurate. So for a computer to work, it needs to perform different tasks, like sending and receiving information, executing instructions, storing information and performing calculations. Different parts of a PC correspond to different operations. It is more like a complete computer than a CPU. The CPU is the component that performing processing tasks, like calculations and manipulating data. It performs basic arithmetic, logical and input/output (I/O) operations.
SoC vs. CPU – The battle for the future of computing
Is this copied from https://www.extremetech.com/computing/126235-soc-vs-cpu-the-battle-for-the-future-of-computing?