Definitions for "Start bit"
The first bit in asynchronous communication.
A bit that is sent as part of a serial communication stream to signal the beginning of a byte or packet.
In asynchronous communications, a bit that indicates that a byte has just been transmitted. Each byte of data is preceded by a start bit and followed by a stop bit.
communications: The very small piece of information used by a computer to signal that it is about to send a larger piece information. It is needed in situations where sending a known amount of information takes an unknown amount of time, such as when using a modem to communicate over phones lines.