Development History

(1) Mainframe stage

In the 1940s and 1950s, it was the first generation of electron tube computers. After experiencing the development process of tube digital computers, transistor digital computers, integrated circuit digital computers and large-scale integrated circuit digital computers, computer technology has gradually matured. ;

(2) Small computer stage

The 1960s and 1970s were the first "downsizing" of mainframes, which could meet the needs of small and medium-sized enterprises and institutions. processing requirements, low cost, and acceptable price;

(3) Microcomputer stage

The 1970s and 1980s were the second "shrinking" of mainframes "In 1976, Apple was founded in the United States. In 1977, it launched the Apple II computer, which was a great success. In 1981, IBM launched the IBM-PC. Since then, it has experienced several generations of evolution, occupying the personal computer market and making personal computers very popular;

(4) Client/Server

That is the C/S stage. In 1964, IBM and American Airlines established the first global online booking system, which connected more than 2,000 booking terminals in the United States with telephone lines, marking the entry of computers into the client/server stage. This model is still widely used today. In a client/server network, the server is the core of the network, and the client is the foundation of the network. The client relies on the server to obtain the network resources it needs, and the server provides the client with necessary network resources. The advantage of the C/S structure is that it can give full play to the processing capabilities of the client PC. Many tasks can be processed by the client before being submitted to the server, which greatly reduces the pressure on the server;

(5) Internet stage< /p>

Also called the Internet, Internet, and Internet stage. The Internet is an international computer network composed of wide area networks, local area networks and stand-alone computers according to certain communication protocols. The Internet began in 1969 under the agreement established by ARPA (U.S. Department of Defense Research Projects Agency), which brought together universities in the southwestern United States (UCLA (University of California, Los Angeles), Stanford Research Institute (Stanford University Research Institute), UCSB ( Four major computers at the University of California and the University of Utah are connected. Since then, it has experienced text to picture, and now the voice, video and other stages, the broadband is getting faster and faster, and the functions are getting stronger and stronger. The characteristics of the Internet are: globality, massiveness, anonymity, interactivity, growth, flatness, immediacy, multimedia, addiction, and noise. The significance of the Internet should not be underestimated. It is a solid step for mankind to move towards a global village;

(6) Cloud Computing Era

Since 2008, the concept of cloud computing (Cloud Computing) has gradually become popular, and it is becoming a Popular and popular words. Cloud computing is regarded as a "revolutionary computing model" because it makes it possible for supercomputing power to flow freely through the Internet. Enterprises and individual users no longer need to invest in expensive hardware acquisition costs. They only need to purchase rental computing power through the Internet. Users only have to pay for the functions they need, while eliminating the costs of traditional software in terms of hardware, software, and professional skills. Cloud computing allows users to obtain applications without the complexity of technology and deployment. Cloud computing includes development, architecture, load balancing and business models, etc., and is the future model of the software industry. It is a web-based service that is also Internet-centric.