System for the simulation of an electronic circuit

A simulation system of an electronic circuit comprising a memory, a processor, a display means, an interface circuit, and data, address and control buses connecting said memory, processor display means and interface circuit, said memory having a first zone containing data for representing the simulated electronic circuit, a second zone containing instructions and a third calculating zone, said electronic circuit being a network having nodes and branches, each branch having at least one electrical component, the state of said electronic circuit being determined by the potential in each node, the processor performing the instructions contained in said second memory zone, said processor

• calculating the potential of all the nodes at a fixed time Tn, wherein n is an integer between 1 and N, by solving for each node an implicit equation relative to the potential of said node, by carrying out a series of iterations,
• calculating, for each node, the difference between the potential calculated for each node after one iteration and the potential of said node obtained after a preceding iteration,
• comparing said difference with a given threshold,
• calculating a new iteration if said difference is greater than said threshold, and
• calculating by the foregoing operations the potential for all the nodes at a further fixed time T.sub.n, n having a next integer value until said integer value is equal to N, said display means indicating said potentials at the nodes for use in designing and constructing an actual electronic circuit.