RAM         

RAM stands for RANDOM ACCESS MEMORY. RAM is used to store data and instructions temporarily. RAM is volatile memory. It means that its contents are lost when the power is turned off. It is also known as the direct access memory.

 

TYPES OF RAM

1SRAM   [STATIC RANDOM ACCESS MEMORY]

SRAM stands for Static Random Access Memory. The word static indicates that the memory retains its contents as long as power is being supplied. However, data is lost when the power gets down due to volatile nature. SRAM chips use a matrix of 6-transistors and no capacitors. Transistors do not require power to prevent leakage, so SRAM need not be refreshed on a regular basis.

 2   DRAM [DYNAMIC RANDOM ACCESS MEMORY]

DRAM stands for Dynamic Random Access Memory. DRAM unlike SRAM must be continually refreshed in order to maintain the data. This is done by placing the memory on a refresh circuit that rewrites the data several hundred times per second. DRAM is used for most system memory as it is cheap and small. All DRAM are made up of memory and one transistor.