Hi guys, Here is the situation I've 89c51 microcontroller board which I want to connect with PC as well as GSM but as everybody knows it(8051) has only one UART so one solution is try using 87xx or 83xx series of controller but that means I'll have to change my programmer. So what I'm thinking is I'll use simple mux/demux for Tx/Rx of 8051. I want to know will it be o.k.? Can simple AND or OR gates can handle data rate of 9600bps?
Thank you very much in advance.
We have a similar situation and have implemented an analog switch to switch between the two ports rather cheap way to solve it but with a small possibility of missing data if not coded right :)
That would be good option but my problem is I want switching to be handled by uC according to command comes to it Anyway Thanks for sharing your opinion