What is the base diameter of a general computer display screen? How wide is the keyboard? I wonder how big the computer desk should be.

If you have a computer desk, you really don't need to do it yourself. You can buy a very good computer desk for 200 yuan when you go to the market normally, and the design is reasonable! But since you asked, let me tell you briefly that the monitor base is generally 25-30cm, or even smaller, and the keyboard is generally about 45cm. It is more suitable to make the keyboard holder about 60cm.