on the first number of the combination rotate the dial counter clockwise passing the third number once and stopping on the third number on the second pass rotate the dial clockwise stopping on the number zero and continue rotating the dial while simultaneously depressing the door handle on some locks the last step differs or is eliminated referring now to the various drawing figures fig1 is a detailed block diagram of the combination lock rotating device 10 depicting the various elements and their relationship the apparatus is energized with operation of the power off on switch 12 and closure of operation switch 26 the switch 12 selective supplies power to all of the circuit elements except for the battery backup circuit 14 the battery backup circuit is supplied power independently from operation of switch 12 as long as the battery 16 is connected and has a charge the battery backup circuit supplies sufficient power to a memory 18 when switch 12 is open the memory is a type 6264lp manufactured by hitachi or an equivalent thereto commands and data are entered into the memory via a alphanumeric pad 19 of the type series 83 002 manufactured by grayhill corporation or an equivalent thereto the principle element.