To what I remember, and Wiki confirms that, there are differing conventions concerning the unary operation '−' (usually pronounced "minus").
In written or printed mathematics, the expression −3² is interpreted to mean −(3²) = −9
Now, it appears some programming languages consider the 'minus' sign is part of the number, thus taking the square of this number is always a positive number...
IMO, the question is there only to highlight the risk of misunderstanding in between people, and in any case, it would had been better to add parenthesis i.e. (-3)² or -(3²).
https://en.wikipedia.org/wiki/Order_of_operations
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on: Yesterday at 10:17:12 AM
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| Started by Sideshow Bob - Last post by OscarH | ||
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on: Yesterday at 07:50:46 AM
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| Started by Sideshow Bob - Last post by Vineyards | ||
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I am not a mathematician, but we need to consider mathematics as a set of methods agreed upon by people to ease certain aspects of quantifying objects, understanding their magnitudes, etc. Several number types are used, and negative numbers are not considered natural. They were historically needed to demonstrate, for example, the balance of accounts between entities or persons. Bookkeeping runs around a set of agreed-upon rules, and whatever is represented here doesn't have to make sense, it is just how you regard it. There are many more methods where having both positive and negative numbers help people keep track of things.
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on: April 19, 2024, 01:08:21 01:08
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on: April 17, 2024, 03:47:26 15:47
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on: April 13, 2024, 07:09:58 19:09
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on: April 08, 2024, 04:14:10 16:14
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7
on: April 08, 2024, 09:18:12 09:18
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| Started by sphinx - Last post by sphinx | ||
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i am here sharing all the files about crescendo millenium all done in AD_24.3.1
there are 5 folders crescendo millennium this where it all started with importing of files into pcb crescendo millennium from gerbers this where all the work was done and is those that are the latest crescendo millennium from gerbers cam here there was scaling issues from gerber files not to be used crescendo millennium from gerbers pb here is the tiny protection board made separately since there was not many komponents here crescendo millennium from gerbers zsb files made by SideShowBob only the schematics. have fun with it /sphinx |
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on: April 08, 2024, 12:12:00 00:12
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| Started by sphinx - Last post by sphinx | ||
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When i learned a tiny bit more about gerbers i started to realize the size and not matter what i did i just couldnt get em to fit.
I know i have a tiny bit of ocd, but this wasnt about that it was about the difference in size, since my knowlegde of gerber is far behind newb so not figuring out why they did size didnt match, no matter of what i did they just wouldnt match. So thats why i gave up. |
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9
on: April 07, 2024, 04:36:33 16:36
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| Started by sphinx - Last post by Sideshow Bob | ||
 no matter on what i try i get the same results with a .4' x .5" size It turns out it was I who goofed up badly, By sending files with the wrong scaling. I feel ashamed the drill seems to be the right i measured and there are 100mils between the ic pad drills well i have gotten the files using my first try with netlist and so am satisfied with those, i never fiddled with gerbers before so this is all not famliar to me  . They was from early in the process and at that that point since well they looked good. I assumed they was correct. You must be a nitpick when dealing with this. measure twice cut once. See the rar file and the readme.txt file. In the rar file I have also included a schematic of the amp. It is very early in the process. And it is a total mess regarding values,ref_des, and pkg_types. Only the symbols is correct. But it is a startEdit if you wonder where I found the Gerber data it was from the .rep file. They will change for every project of course Edit_2 If any want to know the video is https://www.youtube.com/watch?v=j3MgdCoAoiU. Also note the process du not understand that all the square pads actually are pads. And just omit these these as drilled holes/pads |
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10
on: April 07, 2024, 01:45:42 01:45
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| Started by sphinx - Last post by sphinx | ||
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no matter on what i try i get the same results with a .4' x .5" size
the drill seems to be the right i measured and there are 100mils between the ic pad drills well i have gotten the files using my first try with netlist and so am satisfied with those, i never fiddled with gerbers before so this is all not famliar to me |
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