For example, a tv remote needing two AA batteries instead of four AAA batteries.
In: 2
They gadget people need a thing to do something, so they go to micro controller manufacturers and ask for micro controllers, the micro controller manufacturers provide specs on voltage and current requirements for their controllers, the gadget people design their gadget to use the batteries that provide that voltage and current.
As for how the micro controller designers figure it out, they go to college and get electrical engineering degrees.
Latest Answers