The current technological revolution around the world has made the world faster with the advancements in sophisticated computer devices. Computer, as a digital machine, enables people to work faster than ever before. The memory of this device is a great feature of this digital tool. RAM, Random Access Memory is the primary tool of data storage that is inserted in the integrated circuit while data can be accessed in any sequence or randomly. Thus it is termed RAM or Random Access Memory. The journey of dynamic and static RAM was initiated in 1960s which can readily developed in 1970s. Now a days the technology is much more user friendly. RAM is further divided into three types: • Dynamic RAM (DRAM) • Static RAM (SRAM) • Non-volatile RAM (NVRAM = RAM + Battery) but we will discuss only first two i.e. (DRAM and SRAM). Dynamic RAM is the most common memory used now a days. Inside of the RAM chip there is a memory cell that holds one bit of information and is divided into further two parts: a transistor and a capacitor. The capacitor holds the bit of information as a state of 0 or 1 and the transistor acts as a switch that lets the control circuitry on the memory chip that reads the capacitor or change its state. The capacitor is like a small bucket that stores the electrons in it. To store 1, bucket gets filled with electrons and to store 0 buckets gets empty. The problem with the capacitor’s bucket is that it has a leak and in a matter of few seconds a full buckets becomes empty. Therefore they need to be recharged continuously in order to work properly and because of this reason it has been given the name Dynamic RAM. This refreshing phenomenon is time consuming as well. In static RAM a flip-flop holds each bit of a memory. A flip-flop memory cell takes 4 to 6 transistors along with the wiring. Due to this reason they draws current all the time and gets warm easily, therefore, they cannot be packed together tightly. They do not require any refreshing method though, therefore, they are very fast memory chips.