Tablet computer with three-screen take-up device

The tablet personal computer comprises a main body, a contraction area is arranged in the main body, a first auxiliary screen and a second auxiliary screen are arranged at the two ends of the main body, one end of the first auxiliary screen and one end of the second auxiliary screen are both embedded into the contraction area, and the other end of the first auxiliary screen and one end of the second auxiliary screen are both embedded into the contraction area. Two fixed pulleys are symmetrically arranged on the surface of the inner wall of the contraction area, and a fixing groove is formed inthe surface of the inner wall of the top end of the contraction area; through the designed fixing sleeve, the designed sliding block, the designed first spring and the designed fixed pulley, the screen line can be stretched out and drawn back, part of the screen line is placed in the first spring, a certain space is saved, and through the designed second sliding groove, the designed first connecting block, the designed s