Elizabeth Welsh (steel_lace) wrote in thequestionclub,
Elizabeth Welsh
steel_lace
thequestionclub

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How does a gas station work?

Specifically, when you go inside and pay the cashier for your gas, they then enter it into their system and presumably some sort of command is sent to the pump to direct it to pump and how much. What kind of command is this and how is it sent? Is it like a radio frequency? How does the whole system work?
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