smart board activities for prek.An information system generated by the rapid development of digital display technology, touch technology, multimedia information technology and other scientific technologies. It is a brand-new information dissemination platform called the fifth media along with paper media, radio, television and internet. Compared with the other four media, the multimedia touch screen broadcast control system has the biggest advantage of selecting the specific people to carry out content distribution through the installation location of the display device, and can realize the human-computer interaction function of multimedia information, and can also design the characteristics of the viewing crowd. The special content enables the audience to get the most timely and accurate information, such as broadcasting various interest rate information in the bank, broadcasting the train information in the station, discounting information on the financial broadcast control products, and performing information touch search and information interaction according to their own needs. and many more. The rapid development of network information technology and digital media technology, as well as the popularity of flat display devices and touch devices, especially the increasingly large user market, have prompted the adoption of multimedia touch screen broadcast control systems in many industries in recent years. The financial industry includes banks, securities and other institutions, while the business outlets are the main way for formal banks, securities and customers to communicate. Based on the long-term ??enterprise-customer?? interactive marketing service research, Zhihuaxin adopts advanced technology and combines the characteristics of financial services to launch the ??Focus-based centralized management production, instant information exchange of outlets??. The management system helps banks, securities and other institutions to build interactive interactive marketing platforms based on digital multimedia such as PDP, LCD, LED, etc. It has been awarded by the five major state-owned banks, joint-stock commercial banks and regional rural cooperative banks. Highly recognized.