Electronics :
1# we can define electronics as a components and interactions between components.
Ex: a small circuit of voltages drivers.
: a small circuit of analog converters
2# we can define electronics based on analog, digital and mixed components.
3# also electronics Systems can be very simple untill very complex architecture and modeling.
4# electronics Systems is components design with also integrated circuits designs
So a quick breif idea arround electronics is entering in all Systems and products of now adays.