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Primary Memory
Primary memory is the main memory of a computer. Cpu can directly access this
memory. It is fixed on the motherboard
of a computer. Primary memory is The human brain can hold about
further divided into two types: 2.5 petabytes of information,
equivalent to a tV show being played
● random Access Memory (rAM) for approximately 342 years non stop.
● read-only Memory (rOM) COMputer MeMOry
Random Access Memory (RAM)
rAM is a temporary memory. the information stored
in this memory is lost when the computer is turned off.
that’s why it is also called volatile memory. It temporarily
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stores data and instructions given by the user and also 7
the results produced by the computer. rAM
Types of RAM:
● Static RAM (SRAM): SrAM is a type of memory that holds data without needing
to be refreshed. It is fast and used for small amounts of memory.
example: think of it as a special notepad that always remembers what’s written
on it, even if you do not keep checking it.
● Dynamic RAM (DRAM): DrAM is a common type of memory that needs to be
refreshed thousands of times per second to keep the information.
example: Imagine a chalkboard that fades if you don’t keep writing over it to
make the writing stay clear.
Read-only Memory (ROM)
Information stored in rOM is permanent in nature, i.e.,
it holds the data even if the system is switched off. For
example, it holds the starting instructions that are required
to start a computer. It is also called non-volatile memory. rOM
Suppose, you could create a virtual memory palace in your mind using a
computer. What rooms and objects would you include to help you remember
important information, like math formulas or historical facts?

