Program selection apparatus

Claim 1

A program selection apparatus for program-controlled household appliances, such as washing machines, a numeral keyboard having keys for the input of program specifications consisting of coded number digits, a control device, a display device coupled to said numeral keyboard for a continuous display of the program specifications inputted by actuating the various keys of the numeral keyboard, a signal transducer for indicating faults in inputting number digits forming the program specifications, and, a control device coupling said numeral keyboad to said display device and to said signal transducer for subsequently and continuously displaying the entry of the various number digits of a program specification inputted through actuating corresponding keys of the numeral key board and on inputting another number digit not compatible in the context of the programmability of the associated household appliance with the number digits already inputted and displayed triggering said signal transducer for indicating a fault in programming and preventing the said not compatible number digit from becoming effective for the program selection, the improvement comprising, said control device adapted to always input a same number of digits for forming a particular program specification upon the inputting of the first coded number digit, whereby said control device triggers said display device to indicate request symbols requesting the subsequent inputting of the remaining coded number digits belonging to a complete coded program specification.