Fuel-dispensing system with self-checking means
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United States of America Patent
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Sep 22, 1981
Issued Date -
N/A
app pub date -
Jan 18, 1979
filing date -
Oct 15, 1975
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A processor is used to control a price display unit for a fluid-dispensing system. The amount of fluid dispensed by the system in measured and information responsive thereto is fed to the processor. The processor calculates the cost of the dispensed fluid and those costs are then displayed. The processor automatically cross-checks the validity of the displayed cost with the amount of fluid dispensed. A plurality of self-checking features insure proper system operation and also preserve signals stored in a memory if there is a power failure.
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