buffer settable by the control computer controls the actuation of a solenoid associated with the dispensing mechanism of each member of the plurality of trays the solenoid rotates a mechanical dispenser which permits one of a selected product to be dispensed to the purchaser a transducer in the cabinet of the vending machine senses the delivery of a selected product and provides a feed back signal to the control computer in the absence of a feed back signal the coinage in the coin sensing mechanism is returned to the purchaser application_number US 94663378 A description while the principles of the present invention find a particular utility in a computerized vending machine it will be understood that the vending machine arrangement of the present invention may be utilized in other combinations by way of exemplary disclosure of the best mode of practicing the invention there is shown generally in fig1 a view of a computerized vending machine 10 with a front cover 12 broken away the vending machine 10 is useful for vending a large assortment of products the products are displayed in a top display panel 15 of the vending machine 10 typical articles are of a type that might normally be bought through a drug store such as a bottle of medication 20 a comb 25 and a book 30 optionally a stamp dispenser 40 may be included as a feature of the computerized vending machine 10 the machine 10 is supported by a frame 50 the sheet metal front panel 12 and a set of sheet metal side panels 70 and 75 are fastened to the frame 50 by any conventional means adjacent to the display case 15.