Electronic Systems Design Inc., of San Fernando, Calif., has just developed a new water vending machine control board. This product carries the ESDI model number 030400. It controls all of the functions necessary to interface with a coin acceptor and operate a water vending machine. This is believed to be the first dedicated control board of its kind to be offered to the industry. Presently, each company in the water vending machine business has to design, develop and manufacture its own electronic control board.