RAM

RAM stands for Random Access Memory. A type of computer memory that can be accessed randomly. It is also called "direct access memory."

• RAM is used to store data and information temporarily.
• The user can write information to it and read information from it.
• RAM is a volatile memory which means information written can be accessed as long as the power is on and is lost when power is off.
• It plays a very important role in processing speed of a computer.

There are different types of RAM 

Dynamic RAM :

• DRAM is used in most of the computers. The electric charge of DRAM decreases with time.
• It loses stored information in a very short time even when power supply is on.
• DRAM is made up of capacitors.
• It is less expensive.

Static RAM :

• It can store data without any need of frequent recharging.
• CPU doesn't need to wait to access data from SRAM during processing.
• It is made up of flip-flops. So larger in size.
• It utilizes less power than DRAM and more expensive.

Different kinds of RAM that we use :

• DDR - Double Data Rate( Current generation of RAM used in most computers will be replaced by faster DDR4 next).
• DIMM - Dual in-line memory module( Basic form of RAM used in desktops).
• SO-DIMM - Small outline DIMM( Basic form of ROM used in laptops).