what are the three software requirements needed in before buying a pc?
['Operating system. The operating system of your PC determines the way it looks, how it works, and the type of software you can use. ... ', 'Form factor. Not all desktop PCs are just big boxes that sit under your desk. ... ', 'Processor. ... ', 'Memory. ... ', 'Storage. ... ', 'All-in-one screen size. ... ', 'Other things to consider. ... ', 'You might also need...']