Network Resistor , that is a number of parameters of the same resistance, they are a pins are connected together, as a common pin, normal leads to the rest of the pin. So if a Network Resistor is composed of n resistance, so it is n + 1 pin only, in general, the most public pin that is on the left. It generally use a color dot on Network Resistor. Network Resistor commonly used in digital circuit, such as: as a parallel port on pull or pulldown resistor. Using Network Resistor than with several fixed resistor only more convenient.