Abstract: A theoretical and experimental investigation of square wave voltammetry, especially its cyclic techniques for reversible electrode processes with home-made microcomputer-based electrochemical system are described. The mathematical expressions of current functions for cyclic square wave voltammetry have been developed. It was shown theoretically and experimentally that the peak current and peak potential of the voltammogram for forward sweep are respectively equal to those for reverse sweep with the cyclic square wave voltammetric techniques.These are the important characteristics and criteria of reversible electrode processes when both the oxidation state and reduction state of electroactive analyte are soluble in the electrolyte. The effects of parameters, such as square wave amplitude (E_sw),square wave pariod(τ),staircase potential increment (ΔE),were investigated.The theoretial expectations are in agreement with experimental results obtained by microcomputer-based electrochemical instrumentation.