is there any good ways to interface a computer usb 5 volt USB for control signals

[number47]

is there any code language that is common for interacting with circuits, general hardware, like for automotive OBD systems, or say, Make your own breadboard circuit for controlling lighting or something. and using a laptop or computer to work with it?

[justsomeguy]

There are systems like a Raspberry Pi that you can buy and program for, those have support for several languages.