RAM (Random Access Memory)...

• RAM is a temporary storage device.it is also called volatile memory.
• It is a inside the CPU and store the data and program.
• RAM is a one integrated  circuit that allow the store data and program.When you system is shout down than memory clean.

• RAM is a random access memory and is the basic kind of internal memory.
• RAM is called "random access" because the processor or computer can use any location or data in main memory.
• RAM has been made from reed relays ,transistors,integrated circuit ,magnetic core, or anything that can hold and store binary value.
• Most morden RAM is made from integrated circuits.

Main two categories of RAM:

1.SRAM:

2.DRAM:

1.SRAM:

• SRAM stand for static random access memory.
• Static RAM is called static because when power is immediately off than information and data is store and hold any location.
• Magnetic core and reed relays are example of static memory.
• SRAM is also used the cache memory and and fast execute or access.
• SRAM is a very expensive.
• SRAM is a no need to refresh because it is auto refresh.
• SRAM is size is very large.

2.DRAM:

• DRAM stand for dynamic random access memory.
• DRAM is called dynamic because when power is off than loss the all data and file.
• Transistors and integrated circuit are example of dynamic memory.
• It is possible to battry backup for device.
• It is a very slow to compare to SRAM.
• DRAM is a need to manual refresh.
• DRAM is used to ram.
• DRAM is a less expensive.
• Less size compare to SRAM. 

Type of RAM: 

• DIP (Dual inline memory);
• SIPP (Single inline pinned package)
• SIMM (Single inline memory module) 
• DIMM (dual inline memory module)
• SRAM (Static random access memory)
• DRAM (Dynamic random access memory)
• SLDRAM (Synchronous link DRAM)