What problems did the first information wave mainly solve?

Information processing. From the appearance of the first electronic computer in the 1940s to the 1980s, computers were expensive, bulky and consumed huge energy, and were only used in national defense, meteorology, scientific exploration and other fields. In the 1980s, with the large-scale popularization and application of personal computers, the first wave of informationization came, which can be summarized as a digital stage characterized by stand-alone applications. In this wave, information technology shed its mysterious veil and began to be widely used in other fields. Influenced by this wave of informatization, the first thing to change is the office conditions. Digital office and computer information management system have replaced pure manual processing, and human beings have experienced great changes brought by informatization for the first time.