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TYPES OF COMPUTER MEMORY


                 The computer memory can be classified into two types:
                   Primary Memory                      Secondary Memory


                                                  Computer Memory







                       Primary Memory                                      Secondary Memory





                                                    Hard           CD           DVD           Pen          SSD
                                                     Disk                                    Drive
                      RAM            ROM


                                                       Blu-ray Disc              Memory Card


                 PRIMARY MEMORY

                 Primary memory is the main memory of the computer. It is also known as internal memory.
                 It holds the data and instructions that the computer is currently working on and makes it
                 easily accessible for the CPU to process.

                 Primary memory is further divided into two types:


                 Random Access Memory (RAM)
                 RAM is a volatile memory. The data or information stored in
                 this memory is lost when the processing is incomplete or the
                 computer is turned off. That's why it is also called temporary                      RAM
                 memory. There are two types of RAM:

                   Dynamic Random Access Memory (DRAM)
                   Static Random Access Memory (SRAM)


                 Read-only Memory (ROM)

                 ROM is a non-volatile memory. The data and information stored in
                 this memory do not lose even if the computer is switched off. It is
                 permanent in nature. There are three types of ROM:

                   Programmable Read-only Memory (PROM)                                                 ROM
                   Erasable Programmable Read-only Memory (EPROM)

                   Electrically Erasable Programmable Read-only Memory (EEPROM)


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