A CPU or so called the central processing unit, is a part in
a pc that does the main calculations, meaning it is the most important element
in a computer.
Within the brain, there are two components; the arithmetic
unit which does the calculations with normal mathematical operations and the
control unit. The control unit is the one which touches the memory unit and
does the execution.
The memory unit has three parts; ROM, RAM and cache. RAM is
the forgetful part of the memory(volatile), which loses all the data when there
is no electricity connected.
ROM is the more memorable part of the memory(non-volatile),
where if there is no electricity, it still does not lose the data given.
Cache memory acts like a catalyst, reducing the time taken to
receive data from storage/memory.
References: webopedia.com
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