The revolution of steam power gave birth to the first industrial revolution with steam power as the main feature and textile industry as the leading industry. The revolution of electromagnetic dynamics gave birth to the second industrial revolution characterized by the wide application of electricity. The symbol of the third industrial revolution is the invention and application of atomic energy, computers, space technology and bioengineering.
Among them, the information technology changes represented by computers, Internet, Internet of Things, cloud computing, big data and mobile intelligent terminals have greatly promoted the changes in the economic, political and cultural fields of human society, and also affected the way of life and thinking of human beings.
The upcoming fourth industrial revolution is a technological revolution centered on artificial intelligence, clean energy, robots, quantum information technology, controlled nuclear fusion, virtual reality and biotechnology. The development of digital economy has become a global consensus and is called "the key to the fourth industrial revolution".
Digital economy has the characteristics of rapidity, high permeability, self-expansion, increasing marginal benefits, external economy and sustainability. It is generally believed that the development of digital economy follows three laws:
One is Metcalfe's law, that is, the value of a network is equal to the square of its number of nodes.
The second is Moore's law, that is, the processing capacity of computer silicon chips doubles every 18 months, while the price is halved.
The third is davidow's law, that is, the first generation of products that enter the market can automatically gain 50% market share, and any enterprise must be the first in this industry to eliminate its own products. Only in this way can we constantly deny ourselves and introduce new products, which is the only way out for enterprises.