1, chip: refers to the electronic logic gate circuit burned to the silicon chip with laser, thus forming a variety of chips, today's highest integration, the most powerful should be the CPU chip.
2, CPU: refers to all periods, a variety of electronic components of the computer central processing unit collectively.
3, MPU: also known as microprocessor, refers to the development of computers to the fourth generation, large-scale, ultra-large scale integrated circuit composed of the CPU collectively. The Computer made up of an MPU is a Micro Computer. It is a microcomputer, referred to as: microcomputer.