Lots of change took place in day to day life of human beings after the advent of TRANSISTORS & SEMICONDUCTOR.
Comfort level of humans has increased manifolds since then.
In today's world one can make use of most of apliances by their's app through operating system on mobile
"iot" is one such system through which we can integrate our home to make it fully automated.
The system and it's functions are well described in the figure given below.