Abstract: This paper introduces a digital-code network which applies to any bits and positive integral number systems. It is demonstrated that there are determinate relations between the parameters, such as between different level resistors of network themselves, and between level resistors and terminal resistor, equivalent network resistor, output voltage at each point, maximal output voltage, the utilization ratio of reference voltage etc. A series of arithmetic equations are also derived. In this paper, general conditions of the binary and binary-code-decimal network are discussed. When its level resistors are equal, obtained parameters agree with the parameters of commonly used network.