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1. MEMOR
Y
INTRODUCTIO
N Memory is a device that is used to store data or programs
on a temporary or permanent basis for use in an electronic digital
computer.
The memory is needed for the following purposes:
1. To store the program and data during execution
2. To store the program for repetitive use
3. To store the data for future or periodical use
4. To store the result of execution

2. You Cannot store data in the main
memory of a PC permanent.
Firstly, because it is very
expensive and secondary, it's
content are erased when the
computer is turn off. In order to
preserve or save the work which
you have done on your computer
you need storage media such as
floppy, CD, hard Disk, DVD etc.
SECONDARY MEMORY

3. The main memory of a computer is design to
cater to such needs. It provides space for storing
data and instruction, space for storing
intermediate results and also space for find
result. In short, the specific function of main
memory are to store the following:1. All the data
& instructions are proceed. 2. Intermediate
result for processing3. Final result before
sending them to output device.Types of Main
Memory1. RAM (Ramdom Access Memory) 2.
ROM (Read Only Memory)
PRIMARY MEMORY

4. ROM

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