Verilog

Verilog is a Hardware Description Language. Despite how similar it looks to C and other object-oriented languages, it can throttle code execution with real-time nanosecond delays -- and equally, execute many lines of code at once!

Why the seeming contradiction? Because the code you execute in a Verilog IDE, through simulation and analysis, is just a stepping stone to the "Hardware Description" part of verilog: synthesizing code that can be deployed or manufactured on hardware. Verilog allows us to write in a familiar style not for a general-purpose OS running on an x86 or x64 CPU, but embedded microcontrollers.