A brief description of how the von Neumann computer works 10

It's our common computer.

The main points of von Neumann's theory are: the number system of a digital computer adopts binary; The computer should execute in the order of the program.

Its main contents are:

1.A computer consists of five parts: controller, combinator, memory, input device, and output device.

2.Programs and data are indiscriminately stored in memory in binary** form, and the location of the storage is determined by the address.

3.The controller operates according to a sequence of instructions (programs) stored in memory, and is controlled by a program counter to execute the instructions. The controller has the ability to judge and select different workflows based on the calculation results.

A computer based on the von Neumann architecture must have the following functions:

Send the required programs and data to the computer.

Must have the ability to memorize programs, data, intermediate results, and final computing results for a long time.

Ability to complete various arithmetic, logical operations and data transmission and other data processing capabilities.

It can control the program direction according to the needs and control the coordinated operation of the various parts of the machine according to the instructions.

Ability to output processing results to users as required.

In order to accomplish these functions, a computer must have five basic building blocks, including:

input devices for entering data and programs;

memory of programs and data;

Combinators that complete data processing;

a controller that controls the execution of the program;

An output device that outputs processing results.

The basic principles of the von Neumann computer are:

Von Neumann's Principle:

The principle of "stored program control" was proposed by the American-Hungarian mathematician von Neumann in 1946, so it is also called "von Neumann's principle". This principle established the way in which the basic components of modern computers work, and until now, computers have been designed and manufactured along the "von Neumann" architecture.

The basic content of the principle of "stored program control".

1. Use binary form to represent data and instructions.

2. The program (data and instruction sequence) is stored in the main memory (program storage) in advance, so that the computer can automatically take out the instructions from the memory at high speed and execute them (program control) when working.

3. The computer hardware architecture is composed of five basic components: combinator, controller, memory, input device and output device.

The working principle of the von Neumann computer is that the program is stored in memory in the form of binary **; All instructions consist of opcodes and address codes; Instructions are executed in the order in which they are stored; Combinators and controllers as the center of the computer structure, etc. Von Neumann computers are widely used in data processing and control, but there are some limitations.

In June 1945, von Neumann proposed the concept of storing programs in the memory inside digital computers, which is the paradigm of all modern electronic computers. Neumann structure", computers built according to this structure are called stored program computers, also known as general-purpose computers. A von Neumann computer consists primarily of combinators, controllers, memory, and input/output devices.