When we operate any kind of Computer System we need storage to save our work done on it.
These Storage areas are needed widely and classified into different Categories.
1. Primary Memory
2. Secondary Memory
1. Primary Memory
Primary Memory is also Termed as Main Memory.
It is termed because whenever any user searches something the command first searches into primary memory than goes to secondary memory
CPU can directly read and write into computer with the help of this memory.
The faster memory of Computer,More the Processing Speed of Computer.
The Disadvantage of Primary Memory is that if the user logs out of the computer the data on which is he working gets vanished.
Types of Primary Memory
Basically there are two Types of Primary Memory in Computer.
1.RAM
2.ROM
1.RAM
- RAM Refers for Random Access Memory.
- RAM is a Volatile-type of Memory.
- It is used for executing current data/information stored in memory i.e if the power supply is off of the computer the data will be erased from the memory.
- The Basic Structure of RAM consists of small integrated circuit(IC) chips that are either situated on Motherboard or small circuit board attached to Motherboard.
RAM Memory is Futhur Classified into Two Types.
1.SRAM
- SRAM stands for Synchronous DRAM.
- SDRAM chip is Divided into 2-Dimensional Array of rows and Column.
- Each cell in SDRAM is made of a flip flop that stores one bit.
- The Speed of SDRAM is calculated on the basis in MHz instead of nanoseconds(ns).
- It used as Cache Memory in a computer system.
2.DRAM
- DRAM stands for Dynamic RAM.
- Each Memory cell in DRAM holds one bit of information.
- The Data is Refreshed Periodically to maintain in it.
- The DRAM is cheaper, but it can store much more information.
............ to be continued.
Image Source - Images are taken from Google.
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