Difference Between CPU and MicroProcessor

• Difference Between CPU and MicroProcessor

The technology of the microprocessor has become so advanced that it has the ability to contain not just one but up to four CPUs inside it
The GPU (Graphics Processing Unit) is also contained in a microprocessor
All CPUs are microprocessors, but not all microprocessors are CPUs.
http://www.differencebetween.net/technology/difference-between-cpu-and-microprocessor

• The CPU is combined with memory and I/O on the same chip, creating a complete computer on a single chip. This is called a microcontroller (uC).

http://electronics.stackexchange.com/questions/44740/whats-the-difference-between-a-microprocessor-and-a-cpu