HI, I am super confused why we need to use ttl to rs 232 conversion and rs232 to ttl conversion. please help...
And some people use CAN. And some people use USB. And some people use FW. And some people use Eth. And some people use current loops. And some people use fiber. And some people use eSATA. And some people use ...
There is an almost infinite number of different ways to make external signals more robust.
but i use RS485. it rocks.