Asynchronous Serial Data Transmission by using shift registers (Multisim)

Thread Starter


Joined Feb 26, 2017
Hi all, I'm having problem trying to create an asynchronous serial data transmission (reproduce transmit part of RS232) with shift registers. Right now I made the circuit but am stuck at the moment, to get the counter to get from 0 to 9 and stop there, do I just need to follow the truth tables? So for example, 9 = 1001 so would I put an 'AND' gate at the beginning and end and 2 'NOT' gates in the middle. I've uploaded some attachments on the info of my project.

Thank you.