start bit

<protocol>

A bit which signals the start of transmission of a character on a serial line. For an RS-423 signal, the line is normally at logical zero which there is no data and the start bit is a logical one. The zero-one transition tells the receiver when to start sampling the signal to extract the data bits.

[Is this upside-down?]

Last updated: 1995-02-02

Nearby terms:

StarsetSTARSYSstart bitstart of authorityStart Of Header

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