然后，它生成一个报告，列出这些代码单元每个获得了多少个“节拍(tick)”(即当代码的特定单元正在运行时发生了多少次系统时钟中断)。

Then it generates a report that lists how many "ticks" each of these units of code received (how many times a system-clock interrupt occurred when that particular unit of code was running).

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在收到停止位之后，设备将通过拉低数据线，生成最后一个时钟脉冲来应答收到的字节。

After the stop bit is received, the device will acknowledge the received byte by bringing the Data line low and generating one last clock pulse.

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时钟信号总是由设备端生成的。

The device always generates the clock signal.

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