Isr interrupt service routine. code that performs actions necessary to deal with the condition that caused the interrupt.

中断服务程序。在执行操作时处理可能引起中断情况的代码。

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On software, we take full advantage of the low power modes of the MCU to finish the task in ISR (interrupt service routine), so, the power of system rest with the ISR executive time.

在软件设计上，充分利用所选单片机的低功耗模式，让检测任务在中断服务程序中完成，使系统的功耗主要取决于中断服务程序执行的时间。

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In most RTOS, the timer interrupt service routine (ISR) executes at every time tick.

在一般的嵌入式实时操作系统中，时钟中断服务程序在每个时钟节拍工作。

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