Abstract: A refuel control system is disclosed which may be utilized in a gasoline or other fluid refuelling operation. This system effectively prevents differences in refuelled volume and accurately determines the amount of fluid dispensed. Differences in refuelling operations for a particular dispenser may be due to pressure variations inside a refuel pipe during the initial stages of refuelling and before gasoline is actually flowing through a discharge nozzle. This system involves the use of sub-CPU which reads initialization time data from a host CPU. A motor is then activated to pump fluid to the nozzle after which pulses are generated in response to the flow of gasoline. The sub-CPU receives these pulses and then inhibits counting of these pulses until the time period for that particular pumping operation corresponds to the initialization data. After this period, pulses are then monitored in order to correctly determine the actual amount of gasoline dispensed.

Abstract: An electronic cash register system has an electronic cash register which acts as a master machine and a plurality of electronic cash registers which act as slave machines. The master machine includes a processor for processing of a variety of data. This data is collected by a reading device which reads written character or graphics data. The read data is then stored in a storage device. The master machine further includes a panel display device for displaying the data stored in the storage device. The master machine control the panel display device and the transferring of data to the slave machine. Each slave machine includes a storage device, a display panel, and controller for carrying out its operations.