It may be that the computer audio output interface is damaged. You'd better find a professional to repair it. If there is no sound in the computer, there is a small speaker, which may be muted. Check, right-click to select volume control, and then adjust.

information management

Information management is a computer technology based on database management system, which helps managers improve their decision-making level and business strategy. Information processing includes a series of work such as data collection, storage, processing, classification, collation, retrieval and release. Information processing has become the main task of modern computers.

It is the foundation of modern management. According to statistics, more than 80% of computers are mainly used for information management, and information management has become the dominant direction of computer application. Information management has been widely used in office automation, enterprise computer-aided management and decision-making, information retrieval, library, film and television animation design, accounting computerization and other industries.

The application of computer has penetrated into all fields of society, changed the traditional way of working, studying and living, and promoted the scientific calculation of society.

Scientific calculation is the earliest application field of computer, which refers to the use of computers to complete numerical calculation problems raised in scientific research and engineering technology. In the work of modern science and technology, the task of scientific calculation is huge and complicated.

Using the computer's high computing speed, large storage capacity and continuous computing ability, we can solve various scientific computing problems that can't be completed manually.