一个通信包中的数据位数。

The number of data bits in a communication packet

youdao

它是用来设置波特率，奇偶校验，数据位数，停止位。

It is used to set baud rate, parity check, number of data bits, stop bit.

youdao

它是用来设置波特率，奇偶校验，数据位数，停止位。

It is used to set baud rate, parity check, number of data bits, stop bit.

youdao