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MEMORY - Coggle Diagram

- - - - *also called main memory
      - can be read data or programs that ae currently being used by the processor
      - Assambled on a small circuit board called memory module which is plugged onto the memory slots
      - most RAM is volatile, which means it loses its contents when the power is turn off
      - Types of RAM :
        
        2.DRAM
        
        chips mst be reenergized constantly
        
        3.MRAM
        
        stores data using magnetic charges instead of electrical charges
        
        1.SRAM
        
        Chips do not have be reenergized (static) make it faster than DRAM
        
        expensive thna DRAM
  - - - 2.Flash Memory
      - 3.CMOS
      - 1.Read-Only Memory (ROM)
        
        data on most ROM chips cannot be modified
        
        contain a small startup program (BIOS) which is used to boot the computer
        
        ROM is a memory chip that stores permanentdata or instructions
        
        exist as a chip on the motherboard
        
        ROM is non-volatile,which means its contenst are not lost when power is turn off
      - Types of ROM
        
        1.PROM
        
        A blank ROM chip which allows programmer to write permanently
        
        2.EPROM
        
        Allow programer to erase the contents by exposing to ultraviolet light
        
        EEPROM
        
        Allow programmer to erase the contents with an electrical signal