Black Box IC133C-R2, IC187C manual Appendix D Asynchronous Communication

APPENDIX D: Asynchronous Communication

Because each bit in asynchronous communications is sent consecutively, it is easy to generalize asynchronous communications by stating that each character is wrapped (framed) by pre-defined bits to mark the beginning and end of the serial transmission of the character. The data rate and communication parameters for asynchronous communications have to be the same at both the transmitting and receiving ends. The communication parameters are baud rate, parity, number of data bits per character, and stop bits (usually listed in that order, like this: 9600,N,8,1).

31