A method of switching a cell of a memory that consists of cell components formed in a three-dimensional crystal with their own electrical connections and logical cell switching circuits, said method involving the exchange of data with the cells, wherein said exchange is carried out simultaneously with the aid of logical switching circuits and a focused stream of charged particles or electromagnetic radiation, which is directed at one or several of the faces of the crystal onto which a portion of mutually perpendicular electrical connection lines exit. The method simplifies cell switching and does not necessitate switching circuits on all of the faces of a three-dimensional crystal.