It's cute, but, having used analog computers, it lacks some important things. Analog computers are usually reset to initial conditions, then started. As time goes on, the outputs change. This thing has integrators, so it will generate time-varying outputs. You need some way to watch those time-varying outputs, such as a plotter or an oscilloscope. This needs a graphical display. Something like one of those US$20 digital oscilloscopes available on Alibaba.
