Electronic cash register system with input verification

Details Electronic cash register system with input verification Electronic cash register system with input verification

1983-07-20

1986-12-09

Harkcom, Gary V.

Boots, shoes, and leggings

364900, G06F 1502, G06F 1521

Patent

active

046284524

ABSTRACT:
An electronic cash register includes a first memory storing a table of upper and lower limits of money amounts defining allowable input ranges of amounts of money during various transactions. A second memory stores codes for defining the upper and lower limits of money amounts for the various transactions by reference to the table of amounts of money stored in the first memory.

REFERENCES:
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patent: 3816711 (1974-06-01), Bliss
patent: 3946220 (1976-03-01), Brobeck et al.
patent: 4138733 (1979-02-01), Tadakuma et al.
patent: 4234932 (1980-11-01), Gorgens et al.
patent: 4249648 (1981-02-01), Meyer
patent: 4310885 (1982-01-01), Azcua et al.
patent: 4438326 (1984-03-01), Uchida
patent: 4509129 (1985-04-01), Yatsunami et al.

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