Network search and information collection ro-search engine technology

Modern people's lives are increasingly inseparable from the Internet. Surfing the Internet, from chatting rooms, bumping of bricks in forums, to spam, and instant messaging tools and software, to the advent of various electronic media, and the rapid development of online schools, networks are affecting our lives. After the disappearance of various network bubbles, more rational thinking and a thriving new landscape on the network have been brought. We are welcoming a new network world.

Do you feel it? Our language has increased a lot of fresh blood due to the network, and our communication has become more convenient and fast due to the network, our knowledge update speed has also been accelerated by the network by dozens of times ...... It is no exaggeration to say that more and more people are dependent on the internet. Without the internet, they will not know how to live!
Network is a tool. It can also be said that the network is like the "ocean", which is the "ocean of knowledge" and another important and convenient way for modern people to acquire knowledge. However, this knowledge exists objectively. Only those who have mastered the golden key to open this knowledge treasure can fully enjoy the happiness it brings to us. In other words, it is more important for middle school students to acquire this knowledge actively and effectively than the content of the network itself. This topic will combine the author's years of online life experience to discuss the skills and methods in this area with the students.
1. Mastering the necessary "search" skills is an important means to obtain information.
Most of the friends who first entered the network are like a headless fly, and they are in the endless virtual space of the network. This kind of "looking at the Internet" with no purpose may be excited when you encounter a heart-warming website, or be frustrated when you get nothing for a long time. However, this is a must for beginners. If you can master the correct search skills and access the Internet with certain questions, the results will certainly be different after accessing the network.
1. Recognize search engines
What is a search engine? How does it work? Let's start with the search engine history. No one can search for the Internet before January 1, 1990. The origins of all search engines were Archie invented by Alan Emtage, Peter Deutsch, and Bill Wheelan, McGill University students of Montreal in 1990. Later, programmers developed a "Robot" program called "spider, it can automatically retrieve information on the network at a rate that humans cannot achieve. This behavior is similar to a spider crawling on the INTERNET, a huge information network. Therefore, the spider program comes from this. The first Spider program in the World, which is the World wide Web wander of MIT Matthew Gray, is used to track the development scale of the Internet. At the beginning, it was only used to count the number of servers on the internet. Later, F and development were able to capture URLs ).