History of EDA (electronic design automation)?

On 12/13/06, Philip Pemberton <classiccmp at philpem.me.uk> wrote: I'm not sure I have the oldest version, but I do have a DOS-only version of OrCAD schematic capture (not the layout tool) that we used to use in the late 1980s. At the time, it was on a genuine PC-AT with a 40MB hard disk, so I'm not sure about floppy requirements. We used it with PADS-PCB for layout. I have lots of experience with schematic capture and OrCAD, but almost no experience with PADS-PCB and layout. I tried to do some simple stuff a while back, but got stymied trying to export the schematic with enough content for PADS to be happy importing it. For modern stuff, though, I've switched to EagleCAD and have been quite happy with that. I always like the DOS OrCAD interface. -ethan