| 摘要 |
An upright tubular housing is divided into a lower compartment, a central compartment and an upper compartment by horizontal partition plates. Within the lower compartment are the hydraulic components which may be any number of a variety of hydraulic systems from conventional non-electronic or electronic gasoline pumps. A meter of the hydraulic system drives a shaft which, in turn, drives a pulser disposed in the intermediate compartment to provide a clock pulse. Within the upper compartment are the electronic components which include the power supply and a number of pc boards or cards, including a computer board carrying a microprocessing unit, a power fail detector, and a non-volatile memory. Information is transfered to the non-volatile memory on shut down or power failure. A battery pack supplies sufficient power for operation of the displays, after shut down. Other boards include a price control board, and an interface board. These boards are slideably carried by selectively swing out or fixed modules having interchangeable upright partitions, the modules being disposed in the upper compartment. The pc boards of the display assemblies are also slideably carried by the modules which permit display assemblies to be selectively positioned in any one of a plurality of positions. The displays, themselves are plugged into their respective pc boards for support thereby. The lower partition plate, which separates the lower and central compartments, has a skirt overhanging the lower housing section, the skirt being formed of opposed flanges connected by retainer brackets which permit limited movement between the ends of the two elements. On the lower partition plate, a laterally shiftable support for the pulser permits selection of an appropriate gear ratio to adapt the pulser to any of a variety of meters.
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