The concept of the Computing Integrator for Chromatography is described. The computing integrator is a firmware driven digital system incorporating the latest innovations in solid-state memories and computer architecture. Up to four chromatographs can be automated simultaneously. The analog signals from each chromatograph are digitized in channel modules so that transmission to and multiplexing within the processor are both digital. Operating parameters are also input in digital form. The random-access and readonly-memories in the processor and the digital data make possible nonhorizontal baseline corrections, tangential peak splitting, maintenance of optimum peak and baseline detection sensitivity and noise rejection, and post run calculations.