What would you recommend literature and what languages ​​/ technologies to start developing programs at the hardware level?

Question

css

It would be interesting to start with something like I pressed the key - the light came on / the door opened and, in general, work in this direction ...

Answer 1

https://jsfiddle.net/Svupol/kscjx827/31/

Answer 2

https://geektimes.ru/hub/arduino/arduino-projects.ru/projects/cool
_