There are many types of computer memories, but we can see some of them can only be read but not modified once the information was saved. This is the case for the ROM (Read Only Memory) or th EEPROM. There is another type of memory which can be used not only to read content but also to modify it. These memories are known as Read-Write Memories and we can find in this the group as examples the RAM, the hard-disk and the Flash memory (typical in USB flash drives).
RAM (Random access memory)helps in reading aswell as writing data.
Explanation:
Random access memory is a computer memory that can be read and written.Where as ROM (read only memory) can only be read and cannot be written.RAM contains circuits with multiplexers and demultiplexers to connect the datalines to the addressed data for reading or writing.There are majorly two types of RAM .They are SRAM(static random access memory) and DRAM(dynamic random access memory).