Abstract: Sale computing and display apparatus for gasoline-dispensing equipment utilizing a rotatable shaft for metering the amount of gasoline dispensed and a unit price adjusting mechanism cooperating with the rotatable shaft for providing the sale price of gasoline being dispensed as a function of the rotation of the shaft; a pulser responsive to the unit price adjusting mechanism and the rotations of the shaft for providing pulses representative at least of the sale price of the gasoline being dispensed; at least one sale display device, including a light-transmissive liquid crystal display panel, having a planar viewing surface and utilizing a prism for back-lighting the display panel; electronic logic for receiving the pulses, computing the sale and supplying signals for actuating the display panel; and electrical safeguards complying with the requirements for intrinsic safety. The display panel is resistively heated and includes a light-diffusing sheet and a blue-light neutralizing sheet.