Abstract: An apparatus for selecting a product in a vending machine by inputting a contemplated product number selected from product numbers assigned to respective types of products, comprises: a ten key for inputting a product number; a correction button which is operated in the course of or after the operation of the ten key to permit the product number to be re-input; an OK button which is operated after the completion of the operation of the ten key to establish the selection of the product; LED which can light up the ten key, the correction button, and the OK button separately from one another; and a control circuit for controlling LED in such a manner that the ten key, the correction button, and the OK button are successively lighted up according to the operating procedure.