Point of sale system having backup file device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 17, 1994
Issued Date -
N/A
app pub date -
Nov 20, 1992
filing date -
Mar 25, 1988
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A file control system includes a master terminal and a backup terminal, a plurality of satellite terminals, a master file and a backup file, and a file controller for each file. The master file responds to a request for price look up from any of the satellite terminals regardless of any operation of the master terminal or the backup terminal. The master file or the backup file acts or operates as the main operating file to update the system when the other file is down.
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Family
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