Gas dispensers, also known as PUMPS, are machines used to dispense fuel such as gasoline, diesel, and other combustible liquids. They are typically found at gas stations, and are operated by inserting a credit card or cash into the machine. The user then selects the type of fuel they wish to purchase, and the machine dispenses the fuel into their vehicle. Gas dispensers are an important part of the modern transportation infrastructure, allowing drivers to quickly and easily refuel their vehicles.