start bit

start bit

[′stärt ‚bit]
(computer science)
The first bit transmitted in asynchronous data transmission to unequivocally indicate the start of the word.

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.

start bit

In asynchronous communications, the bit transmitted before each character.
References in periodicals archive ?
Triggering can be set relative to the start bit, stop bit, restart, or No Ack command as well as on a specific data or address value.
In one embodiment of the present invention, preamble and synchronization word patterns are selected such that the start bit of the first byte of data that follows the synchronization word synchronizes with the start bit clocking signal of the baseband receiving serial port.
At least get the start bit sorted out, so that you understand what your liabilities are going to be, and then plan forward from that point.