| RAM is considered volatile storage because as | | | | Dynamic random access memory is the most |
| soon as the power supply is stopped, the | | | | common kind of RAM, which stores each bit of a |
| contents of RAM are lost. Hence, the data in RAM | | | | data in a separate capacitor and a transistor. |
| stays as long as the computer is running. RAM is | | | | Capacitors tend to leak electrons, thus the need |
| much faster to read from and write to, when | | | | for recharging arises. Hence, DRAM, unlike SRAM |
| compared to other storage devices like hard disk, | | | | needs to have its storage cells refreshed or given |
| CDROM, Floppy disk etc. RAM can be both read | | | | an electric charge every few milliseconds. This |
| and written; therefore, it is sometimes also called | | | | refresh requirement operation is from where |
| read-write memory.There are two fundamental | | | | dynamic RAM gets its name. DRAM is a volatile |
| types of RAM:(a) Dynamic RAM (DRAM) | | | | memory because it loses data when the power |
| (b) Static RAM (SRAM)(a) Dynamic RAM (DRAM): | | | | supply is stopped. |