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???
04/19/06 16:16
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#114545 - Erik, you're doing it again ...
Responding to: ???'s previous message
Once again, you're pushing in the wrong direction.

First of all, how well the software allows you to enter a schematic, or any perform other task, is completely independent of the research, trade study, and computation, etc, that's required in order to design a circuit. The software is supposed to help make the trip from design to routed PCB.

While the design may take a day or a week, How long it takes to locate and place the schematic symbols, how long it takes to generate a netlist, etc, is associated with the software. How long it takes to figure out where to put the components on the schematic or, for that matter, the PCB, is up to the designer, and what matters is how well the software helps him/her do that, not how long it takes to figure out exactly where the component/connector, or whatever, has to be located.

We're discussing evaluation of a software package at the moment, and I use a small circuit so I can get a "feel" for how things work in a short time. I use a circuit with which I'm familiar so "design time" doesn't become a factor, as that's not the software's job. I use a PCB layout that I know so I'm comparing like features. The routing problem isn't the same if the component locations aren't the same, irrespective of whether they're optimal. I'm trying to evaluate a software package against a known standard, namely the old '80's and early '90's DOS-based OrCAD tools. So far, nothing can touch it.

Secondly, Erik, you're pushing away from the current topic, off-topic though it may be.

After all, we're supposed to be hashing out how the O/P can get a suitable package outline for his circuit board. I've gone off chasing a rabbit, as we all often do. But I think you're just being evasive because you want to be contrary. I don't think this helps.

What I'd suggest you do is get a copy of the old DOS-Based '386+ OrCAD tool set, available at no cost in many places, and evaluate it for yourself. That will give you a "feel" for how well a schematic entry package can be made to work. You said you once used the DOS-based OrCAD. It still works the same, and it's still just as easy to create symbols, print schematics, etc. (It expects a paralle port printer, though, and it likes HP PCL. All bets are off with the older printers. You can generate PDF from PCL files, though I haven't got the tools to do that.)

When you've done that, you'll know I'm not comparing dissimilar quantities.

RE






List of 38 messages in thread
TopicAuthorDate
TSSOP28 footprint for Protel 2.7 PCB            01/01/70 00:00      
   Why not design the footprint yourself?            01/01/70 00:00      
      You want to try it with fricking eagle            01/01/70 00:00      
         Do you like BEagle?            01/01/70 00:00      
            pcad            01/01/70 00:00      
               Yes, I've got it right here            01/01/70 00:00      
                  FPGA libraries in general            01/01/70 00:00      
            Protel            01/01/70 00:00      
               I'm spoiled            01/01/70 00:00      
                  Protel for DOS            01/01/70 00:00      
            a simple workaround            01/01/70 00:00      
            Eagle            01/01/70 00:00      
               what            01/01/70 00:00      
                  BOMs from schematics            01/01/70 00:00      
                     a good idea with problems            01/01/70 00:00      
                        problems have solutions            01/01/70 00:00      
                           agreed, as I tried to convey            01/01/70 00:00      
            WOW            01/01/70 00:00      
               Yes, about five IC's            01/01/70 00:00      
                  OK, now it makes sense            01/01/70 00:00      
                     Well, how would you do it?            01/01/70 00:00      
                        tell it all when first posting            01/01/70 00:00      
                           Erik, you're doing it again ...            01/01/70 00:00      
                              naah            01/01/70 00:00      
                                 Well, OK, it's your choice ...            01/01/70 00:00      
                                    I actually consider that a disadvantage            01/01/70 00:00      
                                       It's a matter of preference, perhaps            01/01/70 00:00      
         There are more than one fish in the sea            01/01/70 00:00      
            It's still much too slow to be useful            01/01/70 00:00      
               In the olden days I worked with DOS ORCA            01/01/70 00:00      
                  It's the plague of Windows            01/01/70 00:00      
                     take the bitter with the sweet            01/01/70 00:00      
                     keyboard shortcuts and toolbars            01/01/70 00:00      
                        I've just got to disagree            01/01/70 00:00      
                           Are you in the mood for another?            01/01/70 00:00      
                     Nah....no menu's            01/01/70 00:00      
                        that is rarely an option            01/01/70 00:00      
                           it's no better if you're independent            01/01/70 00:00      

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