Random Access Memory (RAM)-
This memory allows the computer to access any specific memory cell without accessing all other cells and thus it is called random access memory. Any part can be accessed randomly for reading or writing the data. RAM’s data can be lost when power supply gets off. This makes it a volatile memory that contains information as long as electric current is available. Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), Static RAM, Video RAM, Flash RAM are the types of RAM.
-Read Only Memory (ROM)
This is a read-only memory and uses the metal oxide semiconductor technology. It is also used to store programs and data frequently used in the system. There are three types of ROM namely Programmable read-only memory (PROM), Erasable programmable read-only memory (EPROM), Electrically erasable programmable read-only memory (EEPROM).