Abstract: Electronic laundry machine controller apparatus for automatically synthesizing, in response to single operator program selections, complete laundry cycles or programs from laundry machine control instructions stored, independent of operator selection or control, within an electronically read memory. A read only memory is preprogrammed to store laundry machine control instructions and program synthesis instructions for compiling a large number of different laundry programs, each having laundering steps or operations preconfigured to satisfy the peculiar laundering requirements of a large number of different commercial and institutional users. Program variation select means presettable by the manufacturer or upon installation of the controller enables preselection for execution from the large number of possible laundry cycles, only those laundry machine cycles which best satisfy the user's specific laundering needs.