Disclaimer: This presentation is prepared by trainees of
baabtra as a part of mentoring program. This is not official
document of baabtra –Mentoring Partner
Baabtra-Mentoring Partner is the mentoring division of baabte System Technologies Pvt . Ltd
Memory & Storage
• Terms which are commonly used alternatively.
• Memory refers to the physical devices used to
store programs on a temporary or permanent
basis for use in a computer.
• Storage refers to the a technology consisting
of computer components and recording media
used to retain digital data.
• Also known as Primary Memory,Main Memory
• The only one directly accessible to CPU
• Continuous interaction with CPU
• Any data actively operated is stored in internal
• Contains RAM, ROM, Processer Registers
RAM (Random Access Memory)
• Store the currently processing details data etc
• Allow data to be written and read in a rough
• System speed and performance is dependent
• Mainly two types DRAM & SRAM
ROM(Read Only Memory)
• Non Volatile
• Contains startup program (BIOS) of system
• Helps in System Booting
• Mostly programmed at the time of
• Also have different types
• Processor registers
• Inside processor ,32-64 bit
• Fastest of all the class of memory
• Processor cache
• Intermediate between registers and Main
• Fast & Small size
• Also known as Secondary storage , auxiliary
• Indirectly accessed by CPU
• Input/output channel are used
• Keep data for long run & future analysis
• Less Expensive
• Hard drive, Optical storage, Flash memory,
Magnetic Tapes, Ram disks etc
• Storage device is a device
for recording (storing) information (data).
Recording can be done using virtually any
form of energy.
• Function is same only the mode of working
• Volatile and Non volatile
• Any storage device which is mobile can be
stated as portable.
• The device must be platform independent
• The very first commonly used portable
storage is Floppy .
• Optical storage
• Flash Drive
• Wireless PSD
• The most commonly used Secondary storage
• a data storage device used for storing and
retrieving digital information using rapidly
• The data is read from the disk by detecting
the transitions in magnetization. User data is
encoded using an encoding scheme
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