This article highlights CAD for joint design of the body and VLSI chip and subsequent application in the process of assembling microchips. The developed technology of creating matrix enclosures for VLSI with a large number of outputs provides for the placement and planning of the outputs of the microcircuit chips, as well as the internal connections of the housing. The basis of the developed technology is the creation of a design automation system, which covers all the main stages of designing integrated circuit packages. The developed technology includes: formalizing the parameters of the used technological processes for manufacturing VLSI crystals, housing elements, as well as assembling chips, topological design of VLSI input / output elements, selecting the necessary matrix housing, as well as creating the optimal switching board of the housing and issuing the necessary design documentation for production.