are replaced by various forms of digital readouts. Early uses of instrument clusters often employed LEDs to display analog-type or numeric readings for pressure gauges, electrical gauges, and other displays. They have been increasingly integrated with various cab signalling systems and together with the installation of multi-function displays, have simplified the cab layout and improved user interaction with the engineer. See also Air core gauge Binnacle Car audio Carputer Control panel Control stand Dashcam Flight instruments Glass cockpit GM Instrument Cluster Settlement Head unit Head-up display In car entertainment Saab Information Display Telematics Vehicular communication systems References External links Auto parts Dashboard head units