Whether it is communication or computer development, the speed is getting higher and higher, and the capacity is getting bigger and bigger.
2. integration.
Include service integration and network integration.
3. Digitization.
First, it is convenient for mass production. In the past, it took a lot of time to produce an analog device, and each independent part of the analog circuit needed to be designed and tested separately. Digital equipment is modular, and the design is very simple, which is convenient for mass production and can greatly reduce the cost. Second, it is conducive to integration. The physical characteristics of each analog circuit are very different, while the digital circuit is composed of binary circuits, which is very convenient for synthesis. To achieve complex performance, it is usually impossible to synthesize by analog method. Nowadays, digitalization is developing rapidly, and there are many controversies, such as the digital world and the digital earth. The main advantages of digitalization are convenient for mass production and synthesis.
4. Personalization. Namely liquidity and globality. A person can have the same communication means and use the same information resources and information processing means anywhere in the world.