POS terminal device
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United States of America Patent
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-
Aug 22, 1989
Grant Date -
N/A
app pub date -
Nov 16, 1987
filing date -
Nov 14, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
To improve reliability of a POS (point of sales) terminal device, an internal memory umit is further provided in addition to two external memory units having PLU (price look-up) files. Therefore, even if two external memory units develop trouble simultaneously, data (price, name, linked commodity section data and so on) related to a sold commodity are all read from the internal memory unit, whenever a bar code of the commodity is read through a scanner, before implementing registration processing. The data related to the commodities in the internal memory unit are updated whenever registration processing is implemented in dependence upon the normal external memory unit.
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