Automotive head unit

An automotive head unit, sometimes called the infotainment system, is a component providing a unified hardware interface for the system, including screens, buttons and system controls for numerous integrated information and entertainment functions.
Other names for automotive head units include car stereo, car receiver, deck, in-dash stereo, and dash stereo.
Function.
Central to a vehicle's sound and information systems, head units are located prominently in the center of the dashboard or console, and provide an integrated electronic package.
The head unit provides a user interface for the vehicle's information and entertainment media components: AM/FM radio, satellite radio, DVDs/CDs, cassette tapes (although these are now uncommon), USB MP3, dashcams, GPS navigation, Bluetooth, Wi-Fi, and sometimes vehicle systems status. Moreover, it may provide control of audio functions including volume, band, frequency, speaker balance, speaker fade, bass, treble, equalization, and so on. With the advent of dashcams, GPS navigation, and DVDs, head units with video screens are widely available, integrating voice control and gesture recognition.
Size standards.
An original standard head unit size is ISO 7736, developed by the Deutsches Institut für Normung (DIN):
Single DIN () in Europe, South America, and Australasia
Double DIN () in Japan, the UK, and North America.
For both single and double DIN units, ISO 10487 is the connectors standard for connecting the head unit to the car's electrical system.
Steering and aftermarket brands.
Manufacturers offer DIN headunits and standard connectors (called universal headunits), including Pioneer, Sony, Alpine, Kenwood, Eclipse, JVC, Boyo, Dual, Visteon, Advent and Blaupunkt.