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There are dozens of computer operating systems available, but three of them account for 99% of all operating systems on personal computers.
Linux: share 6%
Based on Unix it is used as the main operating system across the internet, versions of Linux run Google and most other servers. It also runs all of the worlds top 50 super computers. It has relatively low system requirements and can be free from cost, as are most of the programs that run on it. It can be installed on just about any computer including Intel based Apple Macs. There is no version of Photoshop written for Linux.
Typical size on disk including all the programmes you need 12gb
Windows: share 82%
The worlds most popular operating system but few regard it as the best. The system has to be paid for, as will most programs, and is vulnerable to virus attacks, so must be protected by anti virus programs which slow down the performance of the computer. Windows will run on almost all PCs including Apple Macs. Photoshop will run on Windows.
Typical size on disk including a few programmes 20gb
Apple MacOS share 8%
Designed by Apple and installed on all Mac computers. Very similar to Linux in many respects, but not free in any sense. Photoshop will run on Mac.
Typical size on disk including a few programmes 20gb
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