Introduction - If you have any usage issues, please Google them yourself
Timer interrupt for task switching, CPU cycles waiting for the idle task, timer interrupt the CPU periodically recall, according to mandate the design of the different frequency response, the task will be to meet the conditions of CPU resources, CPU for different tasks, " care" is completed again return to the idle task, again and again, for all tasks, if each has a separate CPU, operate independently. Built with the thought that the procedural framework, the biggest advantage is that the task is very easy to cut, the system can do very complex. The program will use this idea to make a different light flashes with different frequencies.