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MEMORY |
The working place in computer where all data is stored is called memory. There are small cells called bit. In these cell data is stored in the form of 0 & 1.
Its unit is bytes.
A memory cell may be defined as a device which can store a symbol selected from a set of symbols.
PRIMARY MEMORY
Primary Memory consist of RAM (random access memory) and ROM (read only memory). In this type of primary memory data is not stored permanently, it is stored temporarily . After getting off data is erased from the memory of computer.
“These are considered as short term memory”
SECONDARY MEMORY
Secondary memory (or secondary storage) is the slowest and cheapest form of memory. It cannot be processed directly by the CPU. It must first be copied into primary storage (also known as RAM ).
Secondary memory devices include magnetic disks like hard drives and floppy disks; optical disks such as CDs and CD ROMs; and magnetic tapes, which were the first forms of secondary memory.
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EXAMPLE OF PRIMARY MEMORY
EXAMPLE OF SECONDARY MEMORY
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