On 2014-05-17 15:28, Robert J. Hansen wrote:
Another way of looking at it: RAM is normally implemented as a
flipflop.
I think the register bank in a processor is still implemented as
flipflops, and all computation ends up there (on a register machine)[1],
so your statement is correct in that respect. A register bank is a RAM.
However, the word "normally" is not quite apt. What you normally call
the RAM of your computer is DRAM, and DRAM is implemented by a charge on
a capacitor. This achieves much higher densities on a chip than SRAM,
but is also slower.
HTH,
Peter.
[1] Alternatively, in the registers between pipeline stages of the
processor. If somebody knows about the latest CPU techniques and
disagrees, by all means, enlighten me :). My knowledge pretty much ends
at basic pipeline design, and is not up to speed with current CPU
technology.
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