What is an electronic computer? The characteristics of electronic computers are:

Why is an electronic computer called a computer? Why is the standard name for a computer an electronic computer?

An electronic computer (English: computer), also known as a computer or computer, is a machine that uses electronic principles to process data according to a series of instructions.

In modern times, the application of mechanical computers has been completely replaced by electronic computers, and its related technical research is called computer science, and "computer technology" refers to the sum of many technical and empirical achievements derived from the application of computer science achievements to engineering practice. "Computer technology" and "computer science" are two related but different concepts, and their differences are that the former is more practical and the latter is more theoretical. In addition, electronic computers are also figuratively referred to as computers.

As for data-centric research, it is called information technology. Usually people come into contact with personal computers (PCs) the most.

There are many types of computers, but in reality, computers are generally tools for processing information. According to Turing machine theory, a computer with the most basic functions should be able to do what any other computer can do. So, as long as time and storage are not taken into account, everything from a personal digital assistant (PDA) to a supercomputer should be able to do the same job.

That is, even computers with the exact same design should be able to be used for everything from company payroll management to unmanned spacecraft maneuvering, as long as they are modified accordingly. Due to rapid advances in technology, the next generation of computers will always be able to significantly outperform their predecessors, a phenomenon sometimes referred to as "Moore's Law".

Computers vary in composition, from early computers being the size of a house, to today some embedded computers may be smaller than a deck of playing cards. Of course, even today there are a large number of large supercomputers that serve the special scientific computing or transaction processing needs of large organizations. The relatively small, designed for personal applications is called a microcomputer, which is referred to as a "microcomputer" in China.

This is what we often refer to when we use the term "computer" today, but now the most common form of computer is embedded, which is usually relatively simple, small, and used to control other devices – whether it's airplanes, industrial robots, or digital cameras. [1]

The above definition of an electronic computer encompasses a number of devices that can be used for a specific purpose or have limited functionality, but when it comes to modern computers, the most important feature is that any computer can emulate the behavior of any other computer (limited only by its own storage capacity and execution speed) given the correct instructions. Accordingly, modern electronic computers are also called general-purpose electronic computers compared to early electronic computers. Beg.

Features: 1. Fast operation speed: the internal circuit of the computer is composed of various arithmetic operations at high speed and accurately. The computing speed of today's computer systems has reached trillions of times per second, and microcomputers can reach more than 100 million times per second, enabling a large number of complex scientific computing problems to be solved.

2. High calculation accuracy: The development of science and technology, especially the development of cutting-edge science and technology, requires highly accurate calculations. The accuracy of a computer-controlled missile against a predetermined target is inseparable from the computer's precise calculations.

3. Strong logical operation ability: the computer can not only perform accurate calculations, but also have logical operation functions, and can compare and judge information. The computer can save the data, programs, intermediate and final results that participate in the calculation.

4. Large storage capacity: The memory inside the computer has memory characteristics and can store a large amount of information, which includes not only all kinds of data information, but also programs that process these data.

1.The calculation speed is fast.

The computing speed of the computer refers to the number of instructions that can be executed per unit of time, generally described by how many instructions can be executed per second, the early computer due to technical reasons, the working frequency is low, the first tube computer in 1946, the volume is quite large, but the operation speed is only a few thousand times, and the modern large-scale computer operation speed has reached billions to tens of billions of times per second.

2.High calculation accuracy.

The accuracy of the computer depends on the word length (binary code) of the machine code, that is, we often say 8 bits, 16 bits, 32 bits and 64 bits, etc., the longer the word length, the more effective digits, and the higher the accuracy. If you use a decimal number in a ten-digit system to turn it into a machine code, it is easy to achieve an accuracy of 1 in 10 billion. China's mathematician Zu Chongzhi discovered pi, in the past, after several generations of scientists long-term and arduous efforts can only calculate to a few hundred decimal places, if you use a computer to calculate, you can obtain a result of one million digits, it can be seen that the accuracy of computer calculations has improved thousands of times.

3.It has the ability to store memory.

Computers have many memory carriers, which can store running data, instruction programs, and the results of calculations for use by the computer itself or users, and can also be output instantly. If a large library uses manual access is like looking for a needle in a haystack, it is now common to use computer management, all the book catalogs and indexes are stored in the computer, and the computer has an automatic query function, if you need to find a book only a few seconds.

4.Ability to analyze data and make logical judgments.

In addition to computing functions, computers also have the ability to analyze data and make logical judgments, and advanced computers also have reasoning, diagnosis, association, and other thinking abilities that simulate human beings, so computers are commonly known as computers.

5.High degree of automation.

The computer has an arithmetic unit, a control unit, a storage unit and an input and output unit, and the computer runs completely in accordance with the pre-programmed program instructions, and different program instructions have different processing results. Therefore, computers can be used in many fields such as industrial and agricultural production, national defense, culture and education, scientific research, and daily life.

By connecting the microcomputer with measuring equipment and instruments, it can process measurement information, analyze data, output measurement results and make corresponding processing in real time, greatly improving measurement efficiency and realizing measurement automation.

Electronic information is controlled by computers, but it is not entirely computer-related, and computers are relatively broad, divided into software and hardware. There are differences in teaching orientation, electronic information programming ability and computer requirements are different, and computers generally prefer to participate in projects in person. The difference between electronic information and a computer.

The direction of cultivation is different.

Electronic information engineering is a discipline that applies computer and other modern technologies for electronic information control and information processing, mainly researching the acquisition and processing of information, and the design, development, application and integration of electronic equipment and information systems.

Computer: A wide-caliber major that combines computer hardware and software, is system-oriented and application-oriented. Through basic teaching and professional training, we will cultivate senior talents with solid basic knowledge, broad knowledge, strong engineering practice ability, pioneering and innovative consciousness, and engaged in scientific research, education, development and application in the field of computer science and technology.

The direction of employment is different.

For graduates majoring in electronic information engineering, there is a big difference between undergraduate and graduate students, with less undergraduate research and development, more technical support and pre-sales marketing or after-sales support, and more graduate research and development.

Computer industry graduates can be transformed from technology to management, this transformation is especially common in the computer industry, for example, writing programs, is a very mental work intensive, with the growth of age, many professionals engaged in this industry often feel powerless, so it is a good choice to transform from technical talents to management talents. At the same time, you can apply for the examination of civil servants or public institutions, because all walks of life now need to use computers to work, or complete the construction of information technology, so in addition to the civil servant posts and public institutions, especially for the information industry, the units set up a certain number of posts to meet the requirements of their own units for computer technology majors.

The connection between electronic information and computers.

Personally, I think that electronic information engineering has a lot to do with computers, mathematics is the foundation of science and engineering, naturally needless to say, computer majors learn language algorithms and the like, electronic information engineering should also be studied; Electronic information majors mainly study electronic circuits, microelectronics, etc., and computer majors also study analog and digital electricity.

In terms of computer hardware, chips, embedded development, etc., also involve circuits. Nowadays, the design of circuit boards in electronic information engineering is mostly designed using computer software, and the requirements for hardware description language are also very high.