Integrated circuit appliance programmer including programmer modification function

摘要

An appliance programmer, in particular an automatic washer programmer, employs a memory circuit and sequence control for establishing a predetermined program. The program may be altered by two techniques. A first technique includes the utilization of a circuit for sampling the circuit connections of the programmer so that any number of steps of the program can be varied to alter the entire program. This technique provides for the manufacture of an integrated circuit to establish a predetermined program and application of that circuit in a variety of appliances with different program requirements. A second technique utilizes operator control switches for manually altering the program and includes apparatus for locking out program modifications after a predetermined time interval at the initiation of program selection.