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System Software, Proprietary and open source - Coggle Diagram

- - - - Many older computers did not have an OS and each program had to be written to communicate with the hardware and motherboard. Now most software uses some sort of OS. A device driver is also a part of this. A driver can connect external devices (peripherals)such as speakers and mice to the computers OS, this will extend the functionality of an Operating System
    - - An OS also manages multiple parts of a system such as users, memory and files. Users are managed by being able to delete edit and change users that are on a network. They can also change users access levels. These levels can change if you can and decide what you can access on an OS. Memory management is what allocates files to RAM and Virtual Memory. It decides what files can be moved and when. File management is similar. It allows users to edit change and move files that are on system.
    - - This is the software that controls a computers hardware and software .It allows the hardware that is connected to the motherboard to communicate and work efficiently with each other. Most software is written to interact with the Operating System and instead of the hardware directly.
- - - - Encryption Software
        
        Encryption software works by using a cipher key to encrypt a set or software, This encryption key is not usually known to the public. Once a file or text has been encrypted, it will be turned into ciphertext.. This then has to be decrypted with a decryption key.
      - Compresion Software
        
        Compression software is where large folders or files are reduced in size. This is done usually by using the two most common types of compression which are lossy and lossless. Lossy deletes some of the original data to reduce it in size. Whereas lossless deletes unnecessary data such as metadata.
      - Defragmentation Software
        
        Defragmentation software works by compiling and re arranging the information that is placed on a HDDs disk. As the information is now arranged, it can be access and read at an easier rate, this is due to the information being all in one segment and therefore the disk does not have to search for different parts of the file .