In the DT era, data will become the main source of energy. The job of "big data" is so popular that it is in short supply for a long time. The purpose of this study was to obtain the big data recruitment information in the ocean of Web, Use Python web crawler technology as a tool to crawl at the recruitment website of https://www.lagou.com ,working place as "Hangzhou", the search criteria for the "big data", using the Pandas + Matplotlib to implement data cleansing, data analysis and data visualization in terms of the job seekers' concerns. The results obtained in this study include company size, education, working years, salary, skill requirements, development prospects, position and job benefits, etc. The results of data visualization provide reference for interested practitioners, but also provide colleges and universities with talent training direction.

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With the rapid development of computer technology, control technology and communication technology, intelligent control and management of hotel rooms have become a hot field. A hotel room control system includes the management system (upper computer) and the intelligent hotel room controller (lower computer). In this paper, hardware and software design of an intelligent hotel room controller based on LPC11c14 are introduced. The experiment and application in hotel room show that this system can provide a high stability and high reliability controller for the hotel managers. Furthermore, it can improve the automation and intelligence of hotel management.

Electronic Design Automation (EDA) technology represents the development direction of modern electronic design technology. This paper presents the traditional digital circuit design method, carefully introduces a top-down hierarchy design method, analyzes advantages and disadvantages of traditional experimental teaching, and proposes the application of EDA experimentation in digital circuit design. It is comprised of hardware and software. Numerical Control Frequency divider is taken as a typical example to display EDA experimental applications. An EDA experimental system based on FPGA/CPLD can achieve automated design of digital circuit quickly and easily, and thus it provides a good platform for the logic design and development of medium and large-scale digital circuit.