The document summarizes different types of computer memory. It discusses primary memory, which includes RAM and ROM that the computer uses to process data. RAM allows for immediate data manipulation and storage of currently running processes, programs, and data. ROM stores startup instructions and can only be written to once. Secondary memory includes magnetic tape, disks, and optical disks, which provide larger backup storage. Magnetic tape uses magnetic coating to store data segments while magnetic disks offer direct access and high storage capacity. Optical disks use reflective coatings read by lasers to store large amounts of data in small spaces.

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COMPUTER’S MEMORY
Subrat Kumar Mishra
Master in Computer Application
Roll No:-470129

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INTRODUCTION
Computer memory refers to
electronic holding area for
instructions and data where
computer’s microprocessor
can quickly reach.

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TYPES OF MEMORY
 Primary Memory
 Secondary Memory

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PRIMARY MEMORY
Types of Primary Memory
 RAM (Random Access Memory)
 ROM (Read Only Memory)
Primary memory is the memory which is
used to process data. It is generally refers to
the volatile memory like RAM.

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RAM
RAM is a kind of memory that
allows computer to store data for
immediate manipulation and to
keep track of what is currently
being processed. It is that place in
the computer system which OS,
application program and data,
which are currently being used.

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TYPES OF RAM
 Static RAM
 Dynamic RAM

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ROM
The non-volatile chip where start up
instructions are stored is called ROM.
ROM can have information written into
it only one time.

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TYPES OF ROM
 Masked ROM
 Programmable ROM (PROM)
 Erasable Programmable ROM (EPROM)
 Electrically Erasable Programmable ROM (EEPROM)
 Flash ROM

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SECONDARY MEMORY
Secondary memory is also called as
auxiliary memory is used to provide back
up storage for instructions and data. It
has much larger capacity than primary
memory.

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TYPES OF SECONDARY MEMORY
 Magnetic Tape
 Magnetic Disk
 Optical Disk

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MAGNETIC TAPE
Magnetic tape is like a plastic tape
with a magnetic coating on it. The
data is stored in the form of tiny
segments of magnetized and
demagnetized portion on the surface
of the material. They are very durable
and can be erased as well as reused
this tapes are the least expensive and
reliable storage medium for
organizing archives and taking back
up.

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MAGNETIC DISK
Magnetic disks are the most widely
used and popular storage medium for
direct access secondary storage. They
offer high storage capacity reliability and
have the capability to access the stored
data directly.

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OPTICAL DISK
An optical disk is a flat, circular, plastic
disk coated with material on which bits
may be stored in the form of highly
reflective areas and significantly less
reflective areas, from which the stored
data may be read when illuminated with a
narrow-beam of laser diode. These disk
are capable of storing enormously high
amount of data in a limited amount of
space.

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THANK YOU

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