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start bit
(redirected from Asynchronous serial communication)

    Also found in: Wikipedia, Hutchinson 0.02 sec.

start bit

In asynchronous communications, the bit transmitted before each character.

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



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Asynchronous serial communication rates up to 230 kbps
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Peripherals include a host interface, a synchronous serial interface (SSI), an asynchronous serial communication interface (SCI), an event counter/timer and an integrated phase-lock loop-based clock circuit (PLL).
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Peripherals include a host interface, a synchronous serial interface (SSI), an asynchronous serial communication interface (SCI), a 24-bit timer/event counter and an integrated phase-lock loop-based clock circuit (PLL).
Motorola Introduces $149.95 DSP56002 Evaluation Module for Turnkey ... by Business Wire
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