Change calculating apparatus

Details Change calculating apparatus Change calculating apparatus

1978-05-30

1980-02-19

Malzahn, David H.

Boots, shoes, and leggings

G06F 1520, G07G 100

Patent

active

041897749

ABSTRACT:
A change calculation apparatus comprises a plurality of keys for indicating monetary units, purchasing amount storing means for storing the purchasing amount of sales to a customer, and calculating means for subtracting from the unitary data of the monetary unit corresponding to the key actuated the data below the unitary data of the monetary unit in the purchasing amount stored in the purchasing amount storing means.

REFERENCES:
patent: 3045901 (1962-07-01), Allen
patent: 3049288 (1962-08-01), Becker et al.
patent: 3330947 (1967-07-01), Alpert et al.
patent: 3691360 (1972-09-01), Gross et al.

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