SRAM vs DRAM

Dynamic Random Access Memory (DRAM)

DRAM stands for Dynamic Random Access Memory. This type of memory stores each bit of data in a capacitor with the help of an integrated circuit. Since capacitors require charge and discharge periodically, it requires a refresh circuit. The structure of DRAM is simple as only one transistor and a capacitor are required per bit. Data in the DRAM is very unstable and available only when power is ON. Data can be R/Wte many times per second with help of a refresh circuit. DRAM is cheaper compared to SRAM.

Static Random Access Memory (SRAM)

SRAM stands for Static Random Access Memory. This type of semiconductor or memory is made up of a latch/flip-flop circuit. A flip flop is the smallest memory storage area in a computer that can store only one bit at a time. So if we need to store 4 bits then four flip-flops are required.

No refresh circuit is required to read/write data in flip flop. Data in the SRAM is lost when power is turned off. RAM is high-speed memory as compared to DRAM but it has less storage capacity than DRAM.

DRAM	SRAM
DRAM stands for Dynamic RAM It is made up of Capacitors Refresh circuit required. Slow speed memory Large storage space Low power consumption E.g. RAM Chip (DDR3) 1GB,2GB, or 4GB	SRAM stands for Static RAM It is made up of flip flops No need for a refresh circuit. High-speed memory Less storage space High power consumption E.g. Cache memory (2 MB,4MB, or 6MB)
https://i.pinimg.com/originals/fa/2e/f9/fa2ef97906329537265f2fa4d04b73ca.jpg	http://www.ee.nthu.edu.tw/jcliao/Logic98/chap06/P226.JPG