A scheme is presented for describing the interconnection of elements and subnetworks into networks by means of "wiring operators." This scheme is algebraic and is intended for conversing with computers. It is especially suitable for two-parts such as amplifiers, filters, microwave networks, and in general, transmission-type networks with an input and an output. The algebra is direct, convenient, and versatile. Each of the wiring operators corresponds to a specific set of calculations on the parameters of the networks involved.