RAM full form Random Access Memory
RAM
is a volatile memory means that data in RAM are lost when computer is turned
off. It is the main memory of a computer or mobile phones. You can change or
erase your data in RAM. Data or applications currently being used on a device
are stored in RAM from the hard drives because data from the RAM are loaded
much faster than the hard drives. Your computer speed will increase with the
increase in the capacity of your RAM.
It
is called 'random access' because data can be read and write randomly from any
single byte.
Types of RAM
Generally RAM can be divided into two broad
categories:
·
SRAM:
Static RAM is much
faster and more expensive than DRAM. It often functions as cache memory.
Information in SRAM is volatile. It stores a bit of data using six transistor
memory cells.
·
DRAM: Dynamic RAM is slower than SRAM. It
stores a bit of data using a transistor and capacitor pair. As it is less
expensive, most computers use DRAM. It is also a volatile memory.
Features of RAM
·
It is a storage type
device, works as main memory.
·
It determines the
computer speed.
It is much smaller than
hard disk, both physically as well as capacity wise
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