We describe the object oriented analysis, design and implementation (in the C++ programming language) of the excitation function concept. Excitation functions are used either to drive an electrochemical experiment or to form the basis of numerical simulation in electrochemistry. They are assembled from segments, defining a functional relationship between an independent variable and a dependent (exciting) variable. The concept is part of our approach to a problem solving environment in the context of computational electrochemistry. Various paradigms of object oriented programming are exemplified by this work. Some applications of the ExcitationFunction package are given and discussed. (C) 2004 Elsevier B.V. All rights reserved.