Computer is digital currency simulation

1. blockchain is an emerging instry, which has been highly valued by all countries. It is called the fourth instrial revolution and will have an immeasurable impact on society. Blockchain is the literal translation of block and chain. Each block stores the transaction data within a specified time, and forms a non tamperable, all staff shared distributed ledger through cryptography
digital currency and virtual currency are actually different names. They are tokens issued based on blockchain technology. Behind them are a series of computer-generated complex codes. At present, there are thousands of digital currencies in the market. The safest and most powerful digital currency is bitcoin
digital currency is also a high-risk and high return investment proct, through appropriate investment strategies, you can get rich returns. If you have spare money, you might as well put some of it into the digital currency. There will be unexpected surprises.

2. Electronic digital computer is a kind of high-speed calculation tool which uses electronic technology to automatically analyze and calculate numerical values. Its basic principle is based on program storage and binary operation. Therefore, its more exact name is electronic storage program digital computer
analog electronic computer, referred to as "analog computer". An electronic computer that represents the amount of computation by continuously varying current or voltage. It is named because it answers all kinds of questions according to the similarity principle and contains the concept of simulation. In the electronic analog computer, "simulation" means similar. The characteristics of analog computer are expressed by continuous quantity, and the operation process is also continuous. The main feature of digital computer is bit operation and discontinuous jump operation.

3. Electronic computer is divided into analog electronic computer and digital electronic computer. Analog electronic computer came out earlier, the internal use of electrical signals to simulate the actual signal of nature, so it is called analog electrical signal. The accuracy of analog computer is poor; All the processing processes need analog circuit to achieve, the circuit structure is complex, and the anti-interference ability is very poor. Digital electronic computer is the mainstream of the computer instry in the world, and its internal processing is a kind of electrical signal called symbol signal or digital signal. Its main feature is "discrete", and there is no third symbol between two adjacent symbols. Because of the difference of signal processing, its structure and performance are better than that of analog computer
there are giant, large, medium, small, micro and single-chip computers, and computers often refer to the last two. Microcomputers are also called microcomputers or microcomputers. Supercomputers are mainly defined in terms of performance. In the 1970s, the supercomputers with the computing speed of more than 10 million times per second, the storage capacity of more than 10 million bits and the price of more than 10 million US dollars were used internationally; Some people regard the electronic computer with the operation speed exceeding 10 million instructions per second and the main memory capacity of several megabytes as a supercomputer. In the 1980s, the standard for supercomputers was a digital electronic computer with a speed of more than 100 million operations per second, a word length of 64 bits, and a main memory capacity of 4-16 megabytes. China's Galaxy computer is a supercomputer
in the 1980s, the standard of mainframe was a computer with operation speed of 1 million to 10 million times per second, word length of 32-64 bits and main memory capacity of 0.5-8 megabytes. Most of the mainframes are general-purpose computers, which are mainly used in computer communication network. The standard of a medium-sized computer is a computer with a computing speed of 100000 to 1 million times per second, a word length of 32 bits, and a main memory capacity of less than 1 Megabyte. It is mainly used in the management of small and medium-sized local computer communication network. There is no strict boundary between minicomputers and microcomputers. The common PC series computers are PC, PC / XT, pc286, VAX and so on. The structure of single chip microcomputer is very different. The main functional components of the above computers are connected together by wires in the form of separation to form a complete computer system, while the single-chip computer integrates all the functional components to form a computer with only one integrated circuit.

4. Electronic computer is divided into analog electronic computer and digital electronic computer. Analog electronic computer came out earlier, the internal use of electrical signals to simulate the actual signal of nature, so it is called analog electrical signal. The accuracy of analog computer is poor; All the processing processes need analog circuit to achieve, the circuit structure is complex, and the anti-interference ability is very poor. Digital electronic computer is the mainstream of the computer instry in the world, and its internal processing is a kind of electrical signal called symbol signal or digital signal. Its main feature is "discrete", and there is no third symbol between two adjacent symbols. Because of the difference of signal processing, its structure and performance are better than that of analog computer
there are giant, large, medium, small, micro and single-chip computers, and computers often refer to the last two. Microcomputers are also called microcomputers or microcomputers. Supercomputers are mainly defined in terms of performance. In the 1970s, the supercomputers with the computing speed of more than 10 million times per second, the storage capacity of more than 10 million bits and the price of more than 10 million US dollars were used internationally; Some people regard the electronic computer with the operation speed exceeding 10 million instructions per second and the main memory capacity of several megabytes as a supercomputer. In the 1980s, the standard for supercomputers was a digital electronic computer with a speed of more than 100 million operations per second, a word length of 64 bits, and a main memory capacity of 4-16 megabytes. China's Galaxy computer is a supercomputer
in the 1980s, the standard of mainframe was a computer with a computing speed of 1 million to 10 million times per second, a word length of 32-64 bits, and a main memory capacity of 0.5-8 megabytes. Most of the mainframes are general-purpose computers, which are mainly used in computer communication network. The standard of a medium-sized computer is a computer with a computing speed of 100000 to 1 million times per second, a word length of 32 bits, and a main memory capacity of less than 1 Megabyte. It is mainly used in the management of small and medium-sized local computer communication network. There is no strict boundary between minicomputers and microcomputers. The common PC series computers are PC, PC / XT, pc286, VAX and so on. The structure of single chip microcomputer is very different. The main functional components of the above computers are connected together by wires in the form of separation to form a complete computer system, while the single-chip computer integrates all the functional components to form a computer with only one integrated circuit.

5.

Features of digital computer:

1, fast operation speed

2, high operation precision

3, strong universality

4, memory function and logic judgment function

5, automatic control ability

features of analog computer:

1, poor accuracy of problem processing

All the processing processes need analog circuit, the circuit structure is complex, and the ability of anti-interference is very poor

Electronic computers are divided into analog computers and digital computers. Analog electronic computer came out earlier, the internal use of electrical signals to simulate the actual signal of nature

digital electronic computer is the mainstream of the computer instry in the world, and its internal processing is a kind of electrical signal called symbol signal or digital signal. Because of the difference of signal processing, its structure and performance are better than that of analog computer

there are giant, large, medium, small, micro and single-chip computers, and computers often refer to the last two. Microcomputers are also called microcomputers or microcomputers

In the 1970s, the supercomputers with the computing speed of more than 10 million times per second, the storage capacity of more than 10 million bits and the price of more than 10 million US dollars were used internationally; Some people regard the electronic computer with the operation speed exceeding 10 million instructions per second and the main memory capacity of several megabytes as a supercomputer

In the 1980s, the standard of supercomputer was a digital electronic computer with a computing speed of more than 100 million times per second, a word length of 64 bits and a main memory capacity of 4-16 megabytes. China's Galaxy computer is a supercomputer

6.

1. It works differently

analog electronic computer uses electrical signals to simulate the actual signals in nature, all the processing processes need analog circuits to achieve, the circuit structure is complex, and the anti-interference ability is very poor

digital electronic computer internal processing is a kind of electrical signal called symbol signal or digital signal. Its main feature is "discrete", and there is no third symbol between two adjacent symbols

2

The speed of analog computer is slow, so it is not used any more; Digital computer is widely used because of its fast operation speed

The range of application was different

With the development of digital computer, analog computer is replaced by digital computer, which is generally used as special simulation equipment, teaching and training tools. The digital computer has been widely used in scientific computing, data processing, auxiliary technology, process control, artificial intelligence, network applications and other fields

extended data

development of analog computer. During the Second World War, Bell Telephone laboratory developed M-9 gun command instrument. After the Second World War, based on the operational amplifier of the M-9 gun command instrument, some people developed an all electronic DC analog computer in 1947

The appearance of

high gain DC operational amplifier has played a revolutionary role in promoting the development of analog computer. At the same time, all developed countries are developing analog computers. In 1948, the first commercial simulation computer was developed

commercialization in 1950s; In the middle and late 1950s, China entered the field of modern analog computer development. In the mid-1960s, a variety of analog computers were developed. Large scale hybrid analog computers such as m-2 and M-6 are the achievements of this period

digital computer classification

electronic computers are giant, large, medium, small, micro and single chip, etc., and computers often refer to the last two types. Microcomputers are also called microcomputers or microcomputers. Supercomputers are mainly defined in terms of performance. In the 1970s, the supercomputers with the computing speed of more than 10 million times per second, the storage capacity of more than 10 million bits and the price of more than 10 million US dollars were used internationally

some people regard the electronic computer as a supercomputer, whose operation speed is more than 10 million instructions per second and main memory capacity is several megabytes. In the 1980s, the standard for supercomputers was a digital electronic computer with a speed of more than 100 million operations per second, a word length of 64 bits, and a main memory capacity of 4-16 megabytes. China's Galaxy computer is a supercomputer

7.

Computers can be divided into digital computers, analog computers and hybrid computers, which are classified according to the principles of computers. Its main feature is "discrete", and there is no third symbol between two adjacent symbols. Because of the difference of signal processing, its structure and performance are better than that of analog computer

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extended data:

computer system

① special purpose computer and general purpose computer: early computers were designed for specific purposes, with special properties. Since the 1960s, we began to manufacture general-purpose computers that take into account the application of scientific computing, transaction processing and process control

In particular, the emergence of series computers, the adoption of various high-level programming languages of standard texts, and the maturity of operating systems enable a series of models to choose different software and hardware configurations to meet the different needs of users in different instries and further strengthen the universality. However, special purpose computers are still developing, such as all digital simulators of continuous dynamics systems, super micro space computers, etc

② supercomputer, mainframe, medium-sized computer, minicomputer and microcomputer: the development of computer is based on large and medium-sized computer. Minicomputers appeared in the late 1960s and microcomputers in the early 1970s. They are widely used because of their lightness, low price, strong function and high reliability

In the 1970s, supercomputers with more than 50 million operations per second began to appear, which were specially used to solve the major problems in the development of science and technology, national defense and economy. Giant, large, medium, small and micro computers, as the echelon components of computer system, have their own uses and are developing rapidly

(3) pipeline processor and parallel processor: under the condition of limited speed of components and devices, we have successfully developed these two kinds of processors by starting from the system structure and organization to achieve high-speed processing capability. They are all oriented to ɑ i θ bi=cii=1，2，3，…，n θ A set of data (also called vector) operations

Pipelined processors are single instruction data stream (SISD) processors, which use the principle of overlap and pipelining to process vector elements with high processing speed. The parallel processor is SIMD. It uses the principle of parallelism to repeatedly set up multiple processing units and simultaneously process each element of vector to achieve high speed (see parallel processing computer system)

pipelining and parallel technology can also be combined, such as repeatedly setting multiple pipelining components and working in parallel to achieve higher performance. The research of parallel algorithm is the key to the efficiency of this kind of processor. The corresponding expansion of vector statements in high-level programming language can effectively organize vector operations; Or with a vector recognizer, automatically identify the vector components in the source program

an ordinary host (scalar machine) with an array processor (only for high-speed vector operation pipeline dedicated machine) constitutes the main and auxiliary computer system, which can greatly improve the processing capacity of the system, and has a high performance price ratio, so it is widely used

(4) multiprocessor and multiprocessor system, distributed processing system and computer network: multiprocessor and multiprocessor system is the only way to further develop parallel technology and the main development direction of supercomputer and mainframe. They are MIMD systems. Each computer processes its own instruction stream (process), communicates with each other, and solves large-scale problems jointly

they have higher parallel level than parallel processors, great potential and good flexibility. It is a direction to study multiprocessor and multiprocessor system that a large number of cheap microcomputers are used to form a system through interconnection network in order to obtain high performance

Multiprocessors and multiprocessor systems require the study of parallel algorithms at a higher level (process). High level programming language provides the means of concurrent and synchronous processes, and its operating system is also very complex. It is necessary to solve the problems of communication, synchronization and control of multiprocessors and multiprocessors

distributed system is the development of multi computer system. It is a system composed of multiple independent and interacting single computers distributed in physics to solve user problems cooperatively. Its system software is more complex (see distributed computer system)< Almost all modern mainframes are multi machine systems with distributed functions. In addition to the high-speed CPU, there are input-output processors (or front-end user computers) for managing input and output, communication control processors for managing remote terminals and network communication, maintenance diagnostic machines for system wide maintenance diagnosis, and database processors for database management. This is a low-level form of the distribution system

a number of geographically distributed computer systems are connected with each other through communication lines and network protocols to form a computer network. It is divided into local (local) computer network and remote computer network according to the distance of geographical distribution. All computers on the network can share information resources and software and hardware resources with each other. Booking system and information retrieval system are all examples of computer network application< (5) Neumann machine and non Neumann machine: stored program and instruction driven Neumann machine are still dominant. It executes instructions in sequence, which limits the parallelism of the problem itself and affects the further improvement of processing speed

the non Neumann machine, which breaks through this principle, is to develop parallelism and improve system throughput from the perspective of architecture. Data stream computer driven by data stream and highly parallel computer driven by reced control and demand are all promising non Neumann computer systems

8. Digital computer
analog computer is very few

9. The computer is a digital signal and the calculator is an analog signal< There is a converter inside the computer to convert analog signals into digital ones.
there is no converter (component) in the calculator, so you can know after assembling the calculator.