Device for computing and displaying the price of a service

Details Device for computing and displaying the price of a service Device for computing and displaying the price of a service

1977-04-28

1979-03-27

Claffy, Kathleen H.

179 18DA, H04M 1510

Patent

active

041467469

ABSTRACT:
This device comprising a pulse receiving circuit, a computer interface circuit responsive to a logic adaptor circuit and delivering, as tax accumulation data are delivered to the device, a signal corresponding to the price of each unitary tax, an adder circuit connected to the output of said computer interface circuit for summing the prices of the various unitary taxes accumulated since the device had been reset for the last time, and a announcer for displaying this sum corresponding to the price to be paid for the service rendered. With this device, it is possible to easily check a debit corresponding to a service rendered, by calculating and displaying the sum to be paid.

REFERENCES:
patent: 3097266 (1963-07-01), Luscher
patent: 3794783 (1974-02-01), Radu
patent: 3920912 (1975-11-01), Anderson et al.
patent: 4008377 (1977-02-01), Szczepanski et al.

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