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Operating Systems (Main operating systems (Windows (Most personal…

- - - - AntiVirus software searches for, detects and destroys viruses which could damage or corrupt the computer system.
      - Spyware protection stops people from being able to illegally monitor other peoples’ use of their computer, including the keys the user types in, which could disclose personal banking details and passwords.
      - Firewalls restrict the incoming and outgoing access to a network by analysing the data and determining whether it should be allowed through or not, based on a predetermined set of rules.
    - - Disk Formatting is used to prepare a storage device so that it is ready to be used for the first time.
      - It deletes any data which is already on the device, partitioning the memory, makes the device visible to an operating system and generating a new file system so that it can be read by the operating system.
      - File Transfer software assists in moving files from one computer system to another. It will make sure that the correct number of data packets are sent at the expected time and that the data is in a suitable format to be transferred.
    - - System information and diagnostics automatically check for errors on the computer system. They will look for bad sectors on a disk and files which have been fragmented and either automatically correct the file or notify the user of what needs to be done.
      - Many programs leave temporary files which take up large amounts of space; system clean up tools delete these unused files and free up space.