I am sending data from a microcontroller to CPU with baudrate 1200, one start bit and one stop bit. I am trying to figure out how much time is needed to send 30 characters or symbols (e.g, a, b, c, ... etc). Here is some calculation.
Assumption: Buadrate is bit rate per second and 10 bits are required to send a character.
Characters per second = 1200 / 10 = 120
Time required to send 30 characters = ( 1 / 120 ) x 30 = 250 m sec
Although the UART configuration 8N1 has not been explicit above, it is valuable to know that a reduced set of characters and symbols of the ASCII table can be also transmitted with 7 bits, thus performing an increase in the sending rate.