Early computers were mainly used for scientific calculations. By taking advantage of the computer's high computing speed, large storage capacity and continuous computing capabilities, various scientific computing problems that cannot be completed manually can be solved, such as engineering design, earthquake prediction, weather forecasting, etc., which require computers to undertake huge and complex calculations.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
Early computers were mainly used for scientific calculations.
Computer, commonly known as computer, is a modern electronic computing machine used for high-speed calculations. It can perform numerical calculations, logical calculations, and also has storage and memory functions. It is a modern intelligent electronic device that can run according to the program and process massive data automatically and at high speed.
It is composed of a hardware system and a software system. A computer without any software installed is called a bare metal computer. It can be divided into five categories: supercomputer, industrial control computer, network computer, personal computer, and embedded computer. The more advanced computers include biological computers, photon computers, quantum computers, etc.
The application of computers has penetrated into all areas of society, and is increasingly changing the traditional way of working, studying and living, and promoting scientific computing in society.
Scientific computing is the earliest application field of computers, which refers to the use of computers to complete numerical calculation problems raised in scientific research and engineering technology. In modern scientific and technological work, scientific computing tasks are numerous and complex. By taking advantage of the computer's high computing speed, large storage capacity and continuous computing capabilities, various scientific computing problems that cannot be completed manually can be solved. For example, engineering design, earthquake prediction, weather forecast, rocket launch, etc. all require computers to undertake huge and complex calculations.
Knowledge expansion:
There are three levels of microcomputer systems from global to local: microcomputer system, microcomputer, and microprocessor (CPU). Neither a simple microprocessor nor a simple microcomputer can work independently. Only a microcomputer system is a complete information processing system and has practical significance.
A complete microcomputer system includes two parts: hardware system and software system. The hardware system consists of arithmetic units, controllers, memories (including memory, external memory and cache), and various input and output devices, and works in an "instruction-driven" manner.
Software systems can be divided into system software and application software. System software refers to software that manages, monitors and maintains computer resources (including hardware and software). It mainly includes: operating system, various language processing programs, database management system and various tool software, etc. The operating system is the core of the system software. Only through the operating system can users complete various operations on the computer. Application software is a computer program compiled for a certain application purpose, such as word processing software, graphics and image processing software, network communication software, financial management software, CAD software, various program packages, etc.
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