The tablet can be used, but don't expect to be used as office software, which will make you desperate.
Reason:
First, the office software in Android and ios is not perfectly compatible with Office, and some will have some inexplicable failures.
Second, the screen is small, the resolution is low, the table is slightly larger and the display is incomplete, so it needs to be dragged around, which is very troublesome.
Third, don't say typing, it's super inconvenient. Typing on a tablet will never be as convenient as typing on a keyboard.
Fourth, as a demonstration of ppt, tablet is a good choice.
The function of the tablet, reading e-books is the biggest function, and I feel that the tablet is a big book. But taking notes is more troublesome. Both Android and ios have reading software that can take notes, but it is quite troublesome to use.
Other functions are often used for squatting, long-term business trips, taking buses and other planes, loading X-rays, watching movies that are not demanding, and recording some daily financial and schedule arrangements, but there is no smart phone to carry around.
If you really want to buy a tablet, then choose a cheap smart device. There are several new models, which are not as good as 2xxx ipad or the same price, but the price is less than 1k, and the cost performance is not bad.
By the way, most tablets don't support USB flash drives, but most of them can use tf cards in China. I'm not used to using cloud platforms for a long time, which was very inconvenient at that time.