If you want to buy an electronic product that is mainly used to write a diary and read books, you can consider the following options: Tablet PC: Tablet PC is an electronic product that is very suitable for writing a diary and reading books. They were light and easy to carry, and they could read e-books anytime, anywhere. Many tablets support a pen or finger touch for easy handwriting and input. Laptops: If you often need to use a computer at home or in the office, then a laptop is a good choice. Laptops were not only powerful, but they were also light and suitable for use anywhere. If you want better battery life, you can consider buying a laptop with a battery charging port. Mobile phones and e-book readers: Mobile phones are a good choice because they can read e-books at any time. If you want a better diary and reading function, you can consider buying an e-book reader, which is usually lighter than a mobile phone and can support reading e-books better. These are some good electronic products to choose from. You can choose according to your needs and budget.