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can a computer be totally made up of SRAM with no DRAM but with secondary memory and run an opreating system properly?

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  • $\begingroup$ Have a look at the time different implementations of computer memory came into use. $\endgroup$
    – greybeard
    Commented Apr 14, 2021 at 12:29
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    $\begingroup$ A computer cannot be totally made up of SRAM. It also needs a CPU. $\endgroup$ Commented Apr 18, 2021 at 5:56
  • $\begingroup$ yeah with a CPU $\endgroup$
    – jd singh
    Commented Apr 19, 2021 at 7:07
  • $\begingroup$ Sure can! It's just more expensive, so they don't. Guarantee your CPU cache is made of SRAM. A 64KB SRAM chip (the type you might find in a really old computer) now costs about €3 according to Google. $\endgroup$ Commented Mar 15, 2022 at 10:33
  • $\begingroup$ Some early computers used magnetic disks as the core memory. $\endgroup$
    – user16034
    Commented Apr 16, 2022 at 14:23

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Certain early personal computers in fact used SRAM as their main source of memory. The ZX80 for example.

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Have a look at the Cray X-MP super computer. It uses SRAM instead of DRAM.

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