I have a newer LCD screen (DVI)that works fine with my main PC. I would also like to view a second (lot older PC, a D-sub I think) using the same monitor. I am told that there are switching devices available but have found it all a bit confusing.
Any help or direction on what I need would be greatly appreciated.
Or you may have B.N.C connector's on the back of your monitor as one of my old Crt Monitors does. you can then connect VGA and B.N.C cable from each computer. The monitor also as to have a switch for changing over