In this paper, a new method is proposed to analyze the behavior of a cam with arc, straight and corner contours. This method is characterized by converting cam behavior into linkage behavior, that is, a cam is modeled by linkage. This method can give for the cam and linkage parts of a compound mechanism simultaneously using conventional linkage analysis. The method is successfully applied to a computer aided analysis of the dynamic behavior of compound mechanism with a cam and linkages in an automatic teller machine. Furthermore, the accuracy of calculation of the mechanism's dynamic behavior is discussed for two analytical models, the series model and the parallel model.