Presentation device is used in teaching of portable accounting computerized

• Main Author: MENG XIAOXIN
• Format: Patent
• Language: Chinese; English
• Published: 11.09.2018
• Subjects: ACCESSORIES THEREFOR; ADVERTISING; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE; CINEMATOGRAPHY; CRYPTOGRAPHY; DIAGRAMS; DISPLAY; EDUCATION; EDUCATIONAL OR DEMONSTRATION APPLIANCES; ELECTROGRAPHY; GLOBES; HOLOGRAPHY; PHOTOGRAPHY; PHYSICS; PLANETARIA; SEALS

The utility model relates to a teaching equipment technical field, and disclose a presentation device is used in teaching of portable accounting computerized, the on -line screen storage device comprises a base, the top of base is rotated and is connected with the rotary disk, the top fixedly connected with support of rotary disk, the inner wall of support one side is inlayed and is had first bearing, threaded cover is inlayed to the bottom of support inner wall, the spout has been seted up at the back of the inner wall of support, the inside sliding connection of spout has the rack, the surface meshing of rack has the gear, the inside fixedly connected with rotary rod of first bearing. This presentation device is used in teaching of portable accounting computerized through setting up mounting bracket, slide rail, pulley, solid fixed ring, curtain and roller bearing, utilizes solid fixed ring to fix the top of curtain, makes the roller bearing rotatory through manual rotation handle for the curtain is in tigh