A complete computer system is composed of a hardware system and a software system; the hardware system is an organic combination of various physical components composed of electrical, magnetic, optical, mechanical and other principles, and is the entity on which the system relies; Software systems are various programs and files that are used to direct the entire system to work according to specified requirements.
The complete computer system is composed of hardware system and software system.
Computer system refers to the computer hardware, software and network system used for database management. Database systems require large-capacity main memory to store and run operating systems, database management system programs, applications, databases, directories, system buffers, etc., while auxiliary storage requires large-capacity direct access devices. In addition, the system should have strong network capabilities.
Computer system consists of hardware (sub)system and software (sub)system. The former is an organic combination of various physical components composed of electricity, magnetism, light, machinery and other principles, and is the entity on which the system relies. The latter are various programs and files used to direct the entire system to work according to specified requirements.
Since the advent of the first electronic computer in 1946, computer technology has made amazing progress in components, hardware system structures, software systems, applications, etc. Modern computer systems range from microcomputers and personal computers. Large computers and their networks have various forms and characteristics. They have been widely used in scientific computing, transaction processing and process control. They have increasingly penetrated into various fields of society and have a profound impact on the progress of society.
Electronic computers are divided into two categories: digital and analog. Generally speaking, computers refer to digital computers, and the data processed by them are represented by discrete digital quantities. The data processed by analog computers are represented by continuous analog quantities. Compared with digital machines, analog machines are fast and have simple interfaces with physical devices, but they have low accuracy, difficulty in use, poor stability and reliability, and are expensive. Therefore, simulators have been phased out and are only used in situations that require fast response but low accuracy. A hybrid computer formed by cleverly combining the advantages of the two still has a certain degree of vitality.
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