A detailed description is given of the logic circuitry required for the experiment on undergraduate statistics described in the preceding article. Random events are counted for sampling periods of typically a few milliseconds, and the resulting Poisson distribution is displayed on a multichannel analyzer. The number of sampling intervals,N, and the total count,Jnixi, may be displayed on numerical indicators, which thus permits the easy calculation of the mean of the distributionJnixi/N. The circuitry also permits the buildup of the distribution of the mean values of a series of runs, each containing a small number of sampling intervals. Input circuitry controlling the dead time is also described.