Yesterday while tinkering over some serial communication
projects, We found a problem of baud rate mismatching of two
devices. Thinking as a noob, Baud rate seems to be same as bit
rate, tried something and again faced that problem. After some
googling and reading stuff we concluded to a simple definition
which can easily differentiate between Baud Rate and Bit Rate.
Baud rate is the number of change in signal-state/ pulse/symbol
per second in a communication channel. For example :- A baud
rate of 1 kBd = 1,000 Bd is synonymous to a symbol rate of 1,000
symbols per second. In case of a modem, this corresponds to
1,000 tones per second, and in case of a line code, this
corresponds to 1,000 pulses per second. The symbol duration time
is 1/1,000 second = 1 millisecond. Also if any circuit shows a
baud rate of 9600, that means circuit changes its signal-state
9600 times in a second. Signal-State change can include 0 to 1
or vice versa. The symbol rate is related to but should not be
confused with gross bit rate e