PSpice is a SPICE analog circuit and digital logic simulation program. PSpice processes circuits and executes simulation. PSpice creates an output file to store the simulation results. PSpice supports the following types of analyses: DC Analysis - for circuits with time-invariant sources. It calculates all nodal voltages and branch currents over a range of values; Transient Analysis - for circuits with time variant sources.

It calculates all nodes voltages and branch currents over a time interval and their instantaneous values are the outputs; and AC Analysis - for small signal analysis of circuits with sources of varying frequencies. It calculates the magnitudes and phase angles of all nodal voltages and branch currents over a range of frequencies.