What is the function of the integrated computer in the BlackTooth laser cutter? Or in other words, what functionality does the integrated computer give that the non-computerized cutter lacks?

The integrated computer on the blackTooth eliminates the need for an external computer to control the CNC and laser functions. With any laser cutter, a computer, or other control system is needed that contains software or firmware that provides the pulse trains and other signals that move the axes of the machine, and operate the laser.