Please enable JavaScript.

Coggle requires JavaScript to display documents.

memory and storage, SECONDARY STORAGE..., DISADVANTAGE OF RAM, other types…

- - - - Ram is volatile as all data is lost when the power is off
        
        when computer is first turned on nothing is stored in the RAM.
        
        the computer loads things from the hard drive to the RAM
        
        things from hard drive are slowly loaded to the ram and the ram slowly fills up
        
        the more ram, the more applications or more memory-intensive applications it can smoothly run, making it faster overall
    - - when a computer boots up, the operating system is copied from secondary storage to RAM
- - - - When RAM is full, the computer needs somewhere else to put app data. It moves data that hasn't been used recently to a location on secondary storage known as virtual memory
        
        using virtual memory makes the computer slower as the processor has to wait for the data to swap between the hard disk & RAM
        
        Virtual memory may be needed if there are too many applications open at once or if a particually memory-intensive app is being used {or both}
        
        If the CPU needs to read data stored in V.M it must move the data back to RAM. This also slow as data transfer rates are much slower on secondary than RAM
        
        Virtual memory enables data that is not being used to be transfered to RAM
        
        virtual memory is also volatile
        
        as secondary storage devices have slower access than RAM, the computer's processing performance can be severely impaired (damaged/weakened)
        
        the processing performance can be bettered by increasing the size of RAM, because there is no need of virtual memory
- - - - though they could be damaged by large impacts like being dropped