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CPU & Memory_2 (Operation of memory (CPU determines if it is a
store…
CPU & Memory_2
Operation of memory
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Address from an instruction is
copied to the MAR, which
finds the location in memory
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Bus
Group of electrical or optical
conductors for carrying signals
from one location in the computer
system to another
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The physical connection that makes
it possible to transfer data from one
location in the computer system to another
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RAM:
Random Access Memory
DRAM
(Dynamic RAM)
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Most common, cheap, less electrical
power, less heat, smaller space
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Nonvolatile Memory
ROM
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Holds software that is not
expected to change over the
life of the system such as
firmware used for the system BIOS
Flash Memory
Useful for nonvolatile portable
computer storage, digital cameras,
tablets, smartphones
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Relationship btwn MAR, MDR & Memory
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