2h: Provide a broad definition of 'operating systems'.

Computing Systems
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Androidopen source operating system for tablets and smart phones made by Google
Closed sourcetype of software which you usually have to pay for which you can't add your own bug fixes or features.
iOSclosed source operating system for Apple iPads and iPhones
Linuxopen source operating system often used on web servers or by developers
macOSclosed source operating system for Apple Mac desktops
Open sourcetype of free software which anyone can download or add your own features or bug fixes
Operating Systemsoftware which runs on a computer and allows the user to load apps or manage settings
Windowsclosed source operating system for laptops, tablets and desktops made by Microsoft
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