What is memory give a small definition
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Answer:
Memory is the faculty of the brain by which data or information is encoded, stored, and retrieved when needed. It is the retention of information over time for the purpose of influencing future action. ... The working memory also retrieves information from previously stored material.
Explanation:
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ONLY BIG DEFINITION
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Answer:-
Memory is used to store the data and information in computer memory in the storage space of the computer.
Memory is of two types :-
1. Primary memory
2. Secondary memory
1. Primary memory =>
Primary memory is a memory that is easily accessed by the computer.
Primary memory is of two types :-
• ROM
• RAM
- ROM = ROM is a read only memory.
⠀⠀⠀⠀⠀⠀It is a permanent memory.
⠀⠀⠀⠀⠀⠀In this memory we can only read the data stored in it cannot write anything.
ROM is of two types:-
⠀⠀⠀⠀⠀⠀-EPROM
⠀⠀⠀⠀⠀⠀-PROM
-EPROM=>
⠀⠀⠀⠀⠀⠀It is a erasable programmable read only memory.
⠀⠀⠀⠀⠀⠀It can be reprogrammed.
⠀⠀⠀⠀⠀⠀It is a special type of PROM that can be erased.
⠀⠀⠀⠀⠀⠀
-PROM =>
⠀⠀⠀⠀⠀⠀It is a programmable read only memory.
⠀⠀⠀⠀⠀⠀It is a memory chip on which data can be written only once.
RAM=>
It is a random access memory.
IT is a temporary memory .
We can write or change the data in this memory easily.
RAM is of two types:-
-SRAM
-DRAM
-SRAM :-
It is a static random access memory. It is more expensive and hold less data than dynamic RAM.
-DRAM:-
It is a dynamic random access memory.
It is a type of RAM that stores each bit of data on a separate capacitor.
Secondary memory:-
It is the slowest and cheapest form of memory. It can be processed directly by the CPU. It must be copied into primary storage.
It has two types:-
In fixed devices, there are two types of hard disc drive and CD DVD drive.
In removable device, there are two devices Pen drive and Blue-ray drive.