a option to change the pixels size in the screen or different versions of tpt with smaller or bigger pixels
no i mean changing the pixel size
If you look closely at what the OP said, he clearly states with smaller or bigger pixels. This means he does not want to change the size of the simulation, just the resolution. This is already possible with the large screen option. However, that option requires a very large screen resolution. You can also use the full screen option, but that fails to take into account the aspect ratio of the screen, and is distorted on widescreen displays.
The problem is since each particle is 1 pixel, if it's not a integer multiple of the orginal resolution then some pixels will disappear and get disorted.
i was saying like dividing 1 pixel into 4 or something like that so you can build more complex electronics
Probably addressed already.
In some worlds such a feature might seem desireable, but one must never forget that 'complexity' always comes at the cost of processing time and game performance. Allowing more pixels to be placed on screen than are already capable doesn't allow us to make 'more complex electronics' so much as increase the maximum amount of lag we are capable of inducing; the more particles present, the more your computer has to process every frame.
Densely packing the entire TPT screen as it is with high speed electronics would already make the game run at excessively slow rates. With the current A3SFTT computing technology I'm developing (assuming I get the time to get back to it), I'd very much already be able to fit an entire 16-bit 'personal computer' within the current size limits, but ultimately the closer I get to filling up the screen, the slower that simulation is going to run on peoples' computers.
Pixels on a screen also simply aren't 'divisible' although a pixel on screen may represent the appearance of multiple virtual in-game particles. In this case the best bet would be to keep the current 'large screen resolution' but incorporate a 'screen scrolling' feature that allows you to scroll around a larger save. But again, this doesn't really benefit TPT electronics in terms of performance. Unless you have some sixth gen high end overclocked i7 with SSDs and fast DRAM, this wouldn't even be that useful for personal use.