What’s the Difference Between Microcontroller Board and PCB

Hi everybody! Can someone tell me what is the difference (if it is one) between the *microcontroller board* and the *PCB*? Thank you very much! Anca

Microcontroller boards are useful tools for embedded control and robotics projects where based on powerful microcontrollers.
Printed Circuits boards are electrically connects "electronic components(electronic components)":http://actpcb.com/pcb-calculator using conductive tracks, pads and other features etched from copper sheets laminated onto a non-conductive substrate.

Thanks !

Thanks john steave

Thank you for your answer!

"A single-board microcontroller is a microcontroller built onto a single printed circuit board. This board provides all of the circuitry necessary for a useful control task: microprocessor, I/O circuits, clock generator, RAM, stored program memory and any support ICs necessary. The intention is that the board is immediately useful to an application developer, without them needing to spend time and effort in developing the controller hardware.While A printed circuit board (PCB) mechanically supports and electrically connects electronic components using conductive tracks, pads and other features etched from copper sheets laminated onto a non-conductive substrate."