Can a mini PC and a TV set replace an old laptop?

Anthony wants to replace his mother's old Windows 7 laptop. Would a mini-PC hooked up to her 32in TV work well enough?

My retired mother happily uses her iPhone and iPad for the majority of her digital needs, but she uses an old, low-spec Windows 7 laptop for Microsoft Office documents for various committees she sits on, for her music library and digital photos, some web browsing and other tasks that cannot be easily done on a small device.

I have a Mac Mini running through a 42in TV set, and we are interested in the feasibility of using a mini PC hooked up to her 32in TV. Target budget is 300 for PC, keyboard and any adaptors.

Mini or micro PCs are terrific at what they do, as long as you don't expect them to do too much. They are also potential space-savers because they can be attached to the back of any monitor or TV set that has a standard VESA mount. Anyone unfamiliar with the form factor can read an answer from November 2018, What is the point of mini PCs?