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I want to know how hardwares write a byte in memory?
If there is difference between writing process in RAM and ROM I would like to know as well.

Specially I want to know:

  1. Is hardware writes values bit by bit? (I mean like writing first bit then go to next)
  2. Is there a header that move around and change bit by bit? If not how it is working?
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  • $\begingroup$ en.wikipedia.org/wiki/Dynamic_random-access_memory $\endgroup$
    – D.W.
    Commented Sep 2, 2022 at 18:17
  • $\begingroup$ Thanks @D.W. it seems that it is not bit by bit, but each time changing a bit-line (could have multiple columns or rows, I guess) $\endgroup$
    – Khashayar
    Commented Sep 2, 2022 at 19:35
  • $\begingroup$ ROM stands for Read-Only Memory. So, no writes ! $\endgroup$
    – user16034
    Commented Sep 2, 2022 at 19:59
  • $\begingroup$ There have been very different implementations, even narrowed to main memory. The bit serial ones (delay lines, magnetic drums) were marginalised by (magnetic) core memory by 1955. I think bubble memory to be the weirdest one: moving magnetic domains relative to something that can be considered read- and write heads, bit serial for each loop, used for persistent storage. $\endgroup$
    – greybeard
    Commented Sep 3, 2022 at 5:00

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