Memory are storage devices which stores data.mainly memories are two types there are RAM,ROM.RAM means random access memory,ROM means read only memory.ROMs are many types PROM,EPROM,EEPROM,Flash ROM.Flash ROM is very fastest memory.
memory refers to any information or data, often in binary format, that a machine or technology can recall and use. There are many different kinds of memory in conventional computers and other devices, and they differ based on the complex design of the hardware in which they're stored.