What are the characteristics of electronic digital computers?

1. Fast operation speed: the internal circuit of the computer is composed of various arithmetic operations at high speed and accurately.

2. High calculation accuracy: The development of science and technology, especially the development of cutting-edge science and technology, requires highly accurate 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.

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

5. High degree of automation: because the computer has the ability to store memory and logical judgment, people can incorporate the pre-programmed program group into the computer memory, and under the program control, the computer can work continuously and automatically without human intervention.

6. Cost-effective: almost every household will have a computer, which is becoming more and more common and popular, and the computer will become one of the indispensable electrical appliances in every household in the 21st century. Computers are developing rapidly, and there are desktops and laptops.

1. Fast operation speed 2. High calculation accuracy 3. Strong versatility 4. Memory function and logical judgment function 5. Automatic control ability Characteristics of simulation computer: 1. Poor accuracy in dealing with problems. 2. All processing processes need analog circuits.

The circuit structure is complex, and the anti-external interference ability is extremely poor.

The work of an electronic computer is based on the principle of an electronic pulse circuit, which consists of electronic circuits that constitute its various functional components, in which the propagation of electric fields plays a major role. We know that electromagnetic fields travel very fast, and today's high-performance computers can perform tens of billions of additions per second. If a person can do an operation in one second, then the average computer has to do more than 100 years of work in one hour.

In many cases, the speed of the operation plays a decisive role. For example, computer-controlled navigation requires "computing speed faster than an airplane flying"; Meteorological forecasting requires the analysis of a large amount of data, such as 10 days and a half months for manual calculation, which loses the significance of forecasting. With a computer, you can calculate a weather forecast for several days in an area in a few minutes.

Electronic digital computers are characterized by fast operation speed, high calculation accuracy, strong versatility, memory function and logical judgment function, and automatic control ability.

2. High calculation accuracy.

Characteristics of digital computer: 1. Fast operation speed 2. High calculation accuracy 3. Strong versatility 4. Memory function and logical judgment function 5. Automatic control ability Characteristics of analog computer: 1. Poor accuracy in dealing with problems.

2. All the processing processes need to be realized by analog circuits, and the circuit structure is complex and the ability to resist external interference is extremely poor.

The most important feature of the work of electronic digital computers is the storage of programs and program control.

Digital electronic computers, abbreviated as digital computers. The information that is transmitted, stored, and inspected by the computing array inside is a number in the form of an electromagnetic signal. A typical digital electronic computer is composed of a processor, a computer storage system, and a computer input and output system.

Computer storage systems include primary and secondary storage. The processor and the main memory are collectively referred to as the processor; Computer input and output devices and auxiliary memory are collectively referred to as computer peripherals. Computers cannot work with hardware alone, and must have a set of "programs" that determine the rules and sequences of information processing.

Different types of problems can be solved with the same hardware and different programs. Computer programs and corresponding data and documentation are collectively referred to as computer software, which includes computer system software, computer application software, and computer support software. The organic whole of computer hardware and software is called a computer system.

In terms of data representation, computers can be divided into three categories: digital computers, analog computers, and hybrid computers. Digital computers are divided into components according to their composition, including mechanical computers and electromechanical computers, electronic computers in use today, optical computers, quantum computers, biological computers, neural computers, and so on. In terms of their size or system capabilities, electronic computers can be divided into giant, large, medium, small, microcomputer, and microcontroller.

In computer values, there are three concepts that must be mastered: numbers, cardinal numbers, and bit weights.

Numeric: A numeric number in a numeric value that represents the size of the base numeric value. The decimal system has 10 numbers: 0, 1, 2, 3, beam pins 4, 5, 6, 7, 8, 9.

Cardinality: The number of digits used for a value. The base of binary is 2, and the decimal system is 10.

Bit weight: The magnitude of the value represented by a 1 on a digit of a value. For example, in the decimal rubber 345, the position weight of 3 is 100, the weight of 3 is 10, the position weight of 4 is 10, and the position weight of 5 is 1

Hello, it is a pleasure to serve you and give you the following answers: The earliest application fields of electronic digital computers are scientific computing and military computing. Scientific Computing:

Computers can calculate large amounts of data, which can help scientists calculate answers to scientific questions faster and more accurately, so as to better explore the laws of nature. Military computing: Electronic digital computers can calculate a large amount of data, which can help military personnel calculate answers to military questions faster and more accurately, so as to better grasp the situation on the battlefield and better carry out military operations.

Ways to solve the problem:1First of all, it is necessary to understand the background of the problem, analyze the cause of the problem, and find out the root cause of the problem.

2.Then, according to the characteristics of the problem, a reasonable plan for resolving the deficit is formulated, and a feasible solution is formulated in combination with the actual situation. 3.

Finally, according to the solution, work out specific steps and implement the solution in combination with the actual situation. Personal Tips:1

It is necessary to be good at thinking and analyze problems from a macro perspective, so as to find out the root cause of the problem. 2.Be analytical, analyze the problem from the micro level, so as to find a feasible solution.

3.It is necessary to be good at implementation, formulate specific steps according to the solution, and implement the solution in combination with the actual situation.

The electronic computer (computer), commonly known as the computer, is a modern electronic computer used for high-speed calculation, which can perform numerical calculations, logical calculations, and also has the function of storage and memory. It is a modern intelligent electronic device that can operate according to the program and process massive amounts of data automatically and at high speed. <

Demo model: Huawei MateBook X

System version: win10 1, take Huawei Matebook X, win10 as an example. The electronic computer (computer), commonly known as the computer, is a modern electronic computer used for high-speed calculation, which can perform numerical calculations, logical calculations, and also has the function of storage and memory.

It is a modern intelligent electronic device that can operate according to the program and process massive amounts of data automatically and at high speed.

2. A computer composed of a hardware system and a software system without any software installed is called bare metal. It can be divided into five categories: supercomputers, industrial control computers, network computers, personal computers, and embedded computers, and the more advanced computers include biological computers, photonic computers, quantum computers, etc.

3. John von Neumann, the inventor of the computer. The computer is one of the most advanced scientific and technological inventions of the 20th century, which has had an extremely important impact on human production and social activities, and has developed rapidly with strong vitality. Its application field has expanded from the initial military scientific research application to all fields of society, and has formed a huge computer industry, which has led to technological progress on a global scale, which has triggered profound social changes, and computers have spread all over ordinary schools, enterprises, and institutions, and have entered the homes of ordinary people, becoming an indispensable tool in the information society.

4. The application of computers is becoming more and more common in China, after the reform and opening up, the number of computer users in China has been rising, and the level of application has been continuously improved, especially in the fields of Internet, communications, and many other fields. From 1996 to 2009, the number of computer users increased from 6.3 million to 67.1 million, and the number of networked computers increased from 10,000 to 59.4 million. The number of Internet users has reached 100 million, and there are 100 million mobile Internet users on the wireless Internet, including 100 million mobile Internet users, ranking first in the world.

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.