A computer software which can draw and analyze pneumatic circuits was developed for the purpose of introducing and educating pneumatic circuits to beginners in this field. The program was developed using Turbo Pascal and Turbo Pascal Graphix Toolbox and could be run on IBM PC, XT, AT and other IBM compatible computers with a Hercules Graphics Board. The program was defeloped to show sequential control characteristics and to show two stages(on and off) of the pneumatic actuators. Users may save much time in drawing complex pneumatic circuits and can also use this software to check whether circuits are property designed before constucting real pneumatic circuits.