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Three of those images imply too much power in the wrong place. The other is a horse.

What is perpetual energy? All such devices that I have seen were battery powered, often with electronics hidden to make the movement look like perpetual motion. Perpetual motion machines are not physically possible.

Actually, they are just as possible as frictionless surfaces .

..making OS is easy.. Nowadays you know what you have to do. Don't have to design and think about how to do it. Everybody who were writing code in '80 were doing so (they were force to do so!).. any '80 application/game, and some early '90, were intercepting entire functionality of the computer, having to deal with hardware registers (and the all external devices) and program them by themselves.. etc. etc. At that time, entire OS could fit in 4 KB, 8 KB, 16 KB of ROM. Don't tell me you cannot code 16384 bytes of machine code? Seriously? I could write OS in a few hours. In '80-'90 years I was writing 500+ lines of machine code in a few hours. The only limit is amount of beer and pizza around me.. Currently what is considered "OS" is extremely (EXTREMELY) overbloated.. Nowadays, "OS" has built-in TCP/IP stack.. (check when Windows get TCP/IP stack, and then MacOS get TCP/IP stack built-in) Nowadays, "OS" has built-in Internet browser.. (check when Windows get IE, and then MacOS get web browser built-in) Nowadays, "OS" has built-in FTP client.. Nowadays, "OS" has built-in simple text editor (NotePad) and more complex text editor (WordPad).. etc. etc. ..but it won't be "your OS".. you made almost nothing in it..

Sensei and I are both trying to guess what you want to talk about. The good news is that your subject (whatever it is) is Scientific (Mathematical), not another nonsense thread - we already get too many of those. I'm glad you have seen most of my functions before. That makes it easier to talk about. Yes they are from Real Analysis, except the ceiling and floor functions which are from Discrete or Concrete Analysis. Sensei is talking about Numerical Analysis, which is indeed a very important point. His 'control points' are those where some replacement function exactly matches the 'correct' function in value, curvature or some other property. We variously call the replacement function an approximating function, a test function, a collocating function, an interpolating function and so on. Numerical Analysis is about what happens between these points ie the difference between the test function and the correct or actual function. Some of this can be done with Real or Complex Analysis, some needs to be done with Discrete Analysis. But you haven't answered my questions about domains and co domains Or what you want to discuss about any of these functions, here in this thread.

Several thoughts. 1) A motherboard provides mechanical support and fixity as well as electrical connections for componenets, sockets, shields and smaller sub boards (daughter boards). 2) You need to do a search for makers or manufacturers of prototype (circuit) boards, in your area. Such companies make one off boards to order and you can discuss details with them. Some companies will also populate the board for you. Others just produce the bare board. 3) Circuit boards come in several different types, from the simple one sides with components on one side and tracks on the other, to to tracks on both sides and componenets on one or both sides to 'bonded sandwich' construction of several layers of board each with its own individual tracks. 4) Simpler boards use component leads soldered both sides, to provide electric continuity between one side and the other of a board. More complicated boards use what is called 'through plating' to provide this. Many componsnts no longer have leads and are so called SM or surface mount. Different fixing and slodering techniques apply here. 5) The method of soldering also comes into play especially in choosing the material to resist the heat of industrial solder bath methods. Does this help ?

! Moderator Note Persistent sockpuppet, banned. Thread locked

There is nothing to confuse, we just have the fact: more oxigen less power. That's all. 100 meters of run belongs about 10 second. It is possible to run this distance without breathing at all and sprinters never breath intensive when they runs.