Two scattering matrix programs for active circuit analysis

What´s a diamond to an ape, do you think? It´s nothing to be eaten by a monkey. --- Thai poem The philosophy is advanced of having two programs to cover a given area, one for quick routine calculations and one to handle general cases Thus, two scattering matrix programs are described for the area of computer-aided analysis of active circuits. Both programs rest upon an iterative use of cascade loading, a connection previously proven to incorporate any arbitrary connection. One program, GENERAL, covers the multiport case and through an incorporation of the generality of the scattering matrix handles any physical network. GENERAL proceeds by finding the scattering matrix of interconnections through the use of the indefinite admittance and by iteratively cascade loading such interconnections with componenets. The other (time-shared) program, SPEEDY, is a fast 2-port version. SPEEDY´s time advantage comes about by programming the specific results for the most typical design connections (to which the program is limited). These are the series-parallel and cascade connections for 2-ports interpreted in terms of scattering parameters. SPEEDY contains two unique subroutines: one for all possible 2-port connections and one for converting common emitter scattering parameters to those for common base or collector.