What are some Linux distros that use real-time scheduling?

Real time means that correctness of result depends on both functional correctness and time that the result is delivered Soft real time :- Utility degrades with distance from deadline Hard real...

When you need to measure distance. Like, you want a certain size for a block of wood for somebody's lemonade stand. You measure the distance you want and cut it out from the rest of the block. Or you...

There's no mention of a specific distro being used in any specifications that are available on the internet. It is thus likely a custom / from scratch creation for the device.

Linux is often used as a teaching tool for operating system programming, since it's source code is publicly available and can easily be changed.

put it on your toung or through it at some one or put it on metal and record what happens