Many educational machines on the market give me the feeling that they are not smart enough, and each function is different. It costs a lot of money to buy them all. Small educational intelligent screen suitable for children, including story machine, point reading machine, early education machine, learning machine, tablet computer, home education machine, etc. , can protect eyesight, but also has the function of "children's face recognition", which can cooperate with parents to control time and prevent addiction, which really makes parents worry.