Electronic control device for industrial sewing machines

An electronic control device for industrial sewing machines, comprising a housing, a microprocessor located within the housing, a programmable fixed value memory in circuit with the microprocessor, a non-volatile read/write memory capable of connection to the housing through a socket, said read/write memory storing all program steps for sewing an article, said read/write memory comprising a number of program steps, each group consisting of a number of memories, said number of memories equalling a corresponding number of different article sizes, each memory in each group being associated with one of said article sizes, each of said article sizes corresponding to a different stitch number, means detachably connecting said read/write memory to the housing of the control device, and a display and entry keyboard located on a front plate of said housing, wherein the keyboard is used to enter a sign of the article size so that the microprocessor reads out of the corresponding memory a number corresponding to a selected article size.