To display XY movement of your future CNC.
Titles of signals (right from inverters) from top to bottom is as follows: XPUL, YPUL, XDIR, YDIR.
Two integrators emulates work of stepping motors. The direction of axis movement changes by shifting a DC level of input signals. To run the scheme press on the upper switch.
In this circuit the picture on the screen is formed as rhombus. Other shapes you can come up with on their own. It may be square, rectangle.
