Abstract: A method is disclosed in which all patterns to be sewn by an electronic sewing machine are divided into individual unit patterns. Stitch data characteristic of common unit patterns which find application in more than one pattern to be sewn is stored only once in a read-only memory. As a result, wasted space in a read-only memory caused by unnecessary repeated storage of the same stitch data pertaining to common unit patterns is eliminated. This method makes it possible to store more patterns within a read-only memory of a given size and further enables more complicated patterns to be sewn.

Abstract: An electronic sewing machine incorporating a microcomputer including an electronic memory storing a number of stitch pattern data groups as well as scanning means for scanning and displaying the various stitch patterns on an indicator display. A potentiometer knob actuates the microprocessor for providing the various stitch patterns. The scanning means can be an electric motor or a pulse generator.

Abstract: A pattern selecting system is disclosed in which a single set of push buttons is utilized to select a first group of patterns each of which corresponds to a particular push button and a second group of patterns indicated by a series of two figure numbers.