A carputer is a computer with specializations to run in a car, such as compact size, low power requirement, and some customized components. The actual computing hardware is typically based on standard PCs or mobile devices. Because they are computer based they typically have many standard interfaces such as Bluetooth, USB, and WiFi. The first carputer was introduced by Clarion Co. on December 4, 1998, although on-board diagnostics have already been employed ever since the 1980s in order to measure precisely the amount of fuel entering the engine as the carburetors got too complex.