MacSpice simulates electronic circuits. Circuit simulation allows you to build and test virtual models of electronic devices. Simulating a design is often cheaper and faster than building a prototype. MacSpice takes as input a text-file called 'netlist' that describes the circuit. This is a list containing the components and the nodes that they connect to. You can create netlists using a text editor or draw them from a circuit diagram with a third-party schematic capture application. MacSpice then creates a numerical model of each circuit and analyzes it.
A shell is a command interpreter that allows you to specify the type of analysis required and the way the results should be saved, displayed, or processed. The MacSpice command interpreter is of high quality, making it easy to automate tasks.
MacSpice is compatible with Apple Mac computers that are Intel architecture. It is compatible with Berkeley Spice 3f5 and incorporates many improvements, from simple bug-fixes all the way to completely new commands, algorithms, and solution strategies. Spice 3f4 memory leaks have been fixed. New algorithms have been created to simplify large circuit simulations and reduce simulation time. MacSpice also provides a multi-parameter optimizer, inter-process communication and other features.