In addition, the spacing between the pulses in the start bit allows the receiver to measure the transmission rate; the rate does not need to be fixed in advance.

除此之外，也不必事先固定传输速率，因为接收器可透过起始位元内两脉冲之间的距离，测量出传输速率。

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In addition, the spacing between the pulses in the start bit allows the receiver to measure the transmission rate; the rate does not need to be fixed in advance.

除此之外，也不必事先固定传输速率，因为接收器可透过起始位元内两脉冲之间的距离，测量出传输速率。

youdao