Different Types of RAM

RAM stands for Random Access Memory. This memory is part of the computer system‘s Main Memory which is directly accessible by the CPU(Central Processing Unit).

RAM is used to Read/Write data into it which is accessed by the CPU randomly.RAM is used to store data that is currently processed by the CPU. Computer programs and data that are modifiable are stored in the RAM.

Types of RAM

RAM is volatile in nature, which means that if the power to the computer system goes off, the information stored in RAM memory is lost. There are basically two broad categories of RAMs. They are as follows::

• SRAM
• DRAM

 

SRAM

SRAM stands for Static Random Access Memory. It is a type of RAM that consists of circuits capable of retaining the stored information as long as power is supplied. SRAM requires constant power. SRAM memories are used to build Cache Memory. In SRAM, the basic memory cell is a Flip-flop. SRAMS are relatively more expensive but faster.

DRAM

DRAM stands for Dynamic Random Access Memory. It stores the binary information in the form of electric charges that are applied to capacitors. In DRAM, the bits 0 or 1 are stored in the form of the absence or presence of the charge on the capacitor.DRAMs have higher memory density.

DRAMs suffer from the problem of charge leakage and therefore need periodic charging. The stored information on the capacitors tends to lose over a period of time and thus the capacitors must be periodically recharged.