Repeated START bits are not preceded by STOP bits, which is how slaves know the next transfer is part of the same message.
12.
Very early experimental printing telegraph devices used only a start bit and required manual adjustment of the receiver mechanism speed to reliably decode characters.
13.
Synchronization starts with a hard synchronization on the first recessive to dominant transition after a period of bus idle ( the start bit ).
14.
A pause longer than 1 / 1800 seconds between waves marks the beginning of a byte, making the following wave the start bit.
15.
They delete stop / start bits and do fancier data compression as well . talk ) 10 : 35, 25 March 2009 ( UTC)
16.
If the apparent start bit lasts at least one-half of the bit time, it is valid and signals the start of a new character.
17.
The Explorer 85's firmware would measure the time between the start bit and the first data bit in the ASCII code for the space character.
18.
Data words consist of two start bits, 8 to 24 data bits and a single parity bit or optional three bit CRC ( cyclic redundancy check ).
19.
Between computers, the most common configuration used was " 8N1 " : eight bit characters, with one start bit, one stop bit, and no parity bit.
20.
Since the start bit is logic low ( 0 ) and the stop bit is logic high ( 1 ) there are always at least two guaranteed signal changes between characters.
