Shulou(Shulou.com)06/02 Report--

Editor to share with you what is the use of computer instructions, I hope you will gain something after reading this article, let's discuss it together!

A computer instruction is used to instruct the computer to perform a basic operation; the computer instruction is the instruction and command to direct the work of the machine, and the program is a series of instructions arranged in a certain order, and the process of executing the program is the working process of the computer; the controller commands the machine to work, and people use instructions to express their intentions and hand them over to the controller for execution.

Computer instructions are the instructions and commands that direct the work of the machine, the program is a series of instructions arranged in a certain order, and the process of executing the program is the working process of the computer.

The controller directs the machine to work by instructions, and people use instructions to express their intentions and hand them over to the controller for execution.

Principle

The controller directs the machine to work by instructions, and people use instructions to express their intentions and hand them over to the controller for execution. The total number of different instructions that a computer can execute is called a computer instruction system. Each computer has its own specific instruction system, and its instruction content and format are different.

Content

Usually an instruction includes two aspects: the opcode and the Operand, the opcode determines the operation to be completed, and the Operand refers to the data participating in the operation and the address of the unit in which it is located.

In a computer, operation requirements and Operand addresses are represented by binary numbers, called opcodes and address codes, respectively, and the whole instruction is stored in memory in the form of binary coding.

The type and how much of the instructions are related to the specific model, which will not be detailed here, please refer to the specific machine data manual.

Executive program

The sequential execution of instructions will complete the execution of the program, so it is necessary to understand the execution process of instructions. The first is to fetch instructions and analyze instructions. According to the order specified by the program, the currently executed instructions are taken from the internal memory and sent to the instruction register of the controller to analyze the instructions, that is, to determine what the computer should do according to the operation code in the instructions.

The second is to execute instructions. According to the result of instruction analysis, the controller sends out a series of control potentials needed to complete the operation in order to direct the relevant parts of the computer to complete the operation and to prepare for the next instruction.

After reading this article, I believe you have a certain understanding of "what is the use of computer instructions". If you want to know more about it, you are welcome to follow the industry information channel. Thank you for your reading!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.