Concurrency 101

[ibex10]

Here is another one, by @Karl, which talks about microcontrollers.

@Karl

Microcontrollers are concurrent systems, too. That's the point I was making.

Pre-emptive multitasking is all about code being interrupted so other code can run. Even if you don't have an operating system, you'll still have hardware interrupts (e.g. a button was pressed, a hardware timer triggered, or some buffer is empty and needs to be filled).

You might find it enlightening, especially if you are not familiar with how code runs deep down on the hardware.