Monte-Carlo methods have been used as a method of numerical calculations, but these applications are limited to large scale digital computers.
However, if we prepare random voltage source, as discribed in this paper, we can do integral operations of analog voltage comparatively easily through Monte-Carlo methods, and we call it as “Random voltage methods”.
In this paper the author presents a prototype of random voltage source using thyratron noise, flip-flop and D-A conversion circuits, and also shows the basic principle of the integrator of the analog voltage waveforms. As an example, the value of π has been calculated by this integrator.
