Entertainment within a car is an important aspect that users tend to show great interest for. One of these types of entertainment is the "always reliable" radio. This has been a form of entertainment for generations, even in cars. However, it has greatly improved since its more primitive form. The way the actual radio in a car works is pretty much the same as any radio. The antenna receives the frequencies being sent to it and transmits those frequencies, while the sound is being outputed into the speakers. However, within a car, the radio is typically on the same power source and circuits as the lighting and power wipers. Once a user toggles the swicth to turn on the radio, a signal is sent to the car's computer which then switches on the power to the car. One can then tell the computer which station or frequency is desired via a nob, touchscreen, or other form of controlling device.