Abstract: A method of filling a dishwasher includes inputting first water into a dishwasher in a first fill, monitoring temperature of the first water, pumping the first water out of the dishwasher until the temperature of the first water reaches a first predetermined temperature, then filling the dishwasher with second water in a second fill. The method may use criteria other than temperature for stopping the pumping out of the first water and commencing with the filling of the second fill. Such criteria may include elapsing of a timeout.

Abstract: A bill validation and change system for a slot machine. The system accepts bills of a plurality of denominations and pays out change for the bills in coins of the denomation which may be accepted by the slot machine to play a game. Coins input to the slot machine are stored in a coin hopper which is controlled to payout coins to game winners and to make change for bills. The system includes a master processor which determines winning game plays and whether change for a bill should be made. The master processor further controls the coin hopper to payout coins to winners and to make change for a bill. The master processor is coupled to a slave processor which in conjunction with a bill input device determines the validity and denomination of a received bill. The slave processor controls the bill input device to accept valid bills for which the master processor determines that change should be made and to reject other bills.