Abstract: A portable calculator for computation and display of transaction values for concessions sales between a vendor and a customer. The portable calculator includes a housing adapted to be hand held by an operator, having a keyboard with a plurality of keys thereon. The plurality of keys includes a first group representing a plurality of unit price values, a second group representing a plurality of tendered values, and a third group representing a plurality of quantity values. A math processor is in communication with the first group, second group, and third group of keys. A display on the housing displays at least one unit price value, a quantity value, a transaction value, a tendered value, and a change due value. The calculator requires a minimum of key strokes for computation and display of the transaction value and is versatile for use at different venues by untrained venders.

Abstract: A portable calculator for computation and display of transaction values for concessions sales between a vendor and a customer. The portable calculator includes a housing adapted to be hand held by an operator, having a keyboard with a plurality of keys thereon. The plurality of keys includes a first group representing a plurality of unit price values, a second group representing a plurality of tendered values, and a third group representing a plurality of quantity values. A math processor is in communication with the first group, second group, and third group of keys. A display on the housing displays at least one unit price value, a quantity value, a transaction value, a tendered value, and a change due value. The calculator requires a minimum of key strokes for computation and display of the transaction value and is versatile for use at different venues by untrained venders.