Home Common Problem What are computer instructions

What are computer instructions

Aug 30, 2023 pm 01:35 PM
computer instructions

A computer instruction is a command used to control computer hardware to perform specific operations. It is a basic component of a computer program and can be understood and executed by a computer processor, including arithmetic operations, logical operations, data transmission and control. Process, etc., it is represented in binary form, and each instruction has specific opcodes and operands. The writing and optimization of computer instructions is an important research direction in the field of computer architecture and compilers, and is of great significance to improving computer performance and energy efficiency.

What are computer instructions

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

A computer instruction is a command used to control computer hardware to perform a specific operation. It is the basic building block of a computer program that can be understood and executed by a computer processor (CPU). Computer instructions are represented in binary form, and each instruction has a specific opcode and operands.

Computer instructions can perform various operations, including arithmetic operations, logical operations, data transmission and control flow, etc. Arithmetic instructions can perform mathematical operations such as addition, subtraction, multiplication, and division. Logical operation instructions can perform logical operations such as AND, OR, NOT, and XOR. Data transfer instructions can transfer data from one location to another, such as from memory to a register or from a register to an external device. Control flow instructions can change the execution order of the program, such as jumping to a specified address or executing a conditional branch.

The execution of computer instructions is completed by computer hardware. When a computer processor executes an instruction, it determines the operation to perform based on the instruction's opcode and obtains the data required for the operation based on the operands. The process of executing instructions includes steps such as instruction fetching, instruction decoding, operand acquisition, operation execution, and result storage.

The writing of computer instructions is done by programmers. Programmers can use assembly language or high-level programming languages ​​to write computer instructions. In assembly language, each instruction corresponds to a specific opcode and operands. Programmers need to understand the structure and instruction set of computer hardware in order to write instructions correctly. In high-level programming languages, programmers can write instructions using a more abstract and easy-to-understand syntax, and the compiler will convert the high-level language instructions into machine instructions.

The design and optimization of computer instructions is an important research direction in the field of computer architecture and compilers. Designing efficient instruction sets can improve computer performance and energy efficiency. Optimizing the execution of instructions can reduce instruction execution time and resource consumption. In modern computers, technologies such as instruction-level parallelism and superscalar execution are widely used to improve computer parallelism and execution efficiency.

In short, computer instructions are commands that control computer hardware to perform specific operations. It is a basic component of computer programs that can perform various operations, including arithmetic operations, logical operations, data transmission, and control flow. The writing and optimization of computer instructions is an important research direction in the field of computer architecture and compilers, and is of great significance to improving computer performance and energy efficiency.

The above is the detailed content of What are computer instructions. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undress AI Tool

Undress AI Tool

Undress images for free

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

PHP Tutorial
1545
276
How to fix 'This device is not configured correctly. (Code 1)' How to fix 'This device is not configured correctly. (Code 1)' Aug 02, 2025 am 04:33 AM

The device manager displays exclamation marks usually caused by hardware connection problems or driver abnormalities. The solutions are as follows: 1. Check the device connection and power supply, ensure that it is plugged and unplugged and uses live HUB or replace the interface; 2. Update or roll back the driver, and obtain the latest driver through the device manager or official website; 3. Clean up the residual information of the old device, uninstall the hidden device and re-identify it; 4. Carefully modify the registry, delete the exception after backup; if it still cannot be solved, try reinstalling the system.

How to fix 'There are currently no power options available' How to fix 'There are currently no power options available' Jul 27, 2025 am 01:22 AM

First run the power troubleshooter, then use the administrator command prompt to execute the powercfg-restoredefaultschemes command to reset the power scheme, then update or reinstall the ACPI driver, check the Group Policy settings (Pro/Enterprise Edition only), run sfc/scannow to repair the system files, and determine whether it is a user profile problem by creating a new user account. In most cases, the power options will return to normal.

How to fix 'The specified module could not be found' How to fix 'The specified module could not be found' Jul 25, 2025 am 12:58 AM

The "Thespecified module could not be found" error is usually caused by missing or corrupt DLL files, not installing VisualC Redistributable package, corrupt system files or misconfiguration of module paths. You can troubleshoot and fix them by following the steps: 1. Install or repair Microsoft VisualC Redistributable package; 2. Use sfc/scannow and DISM tools to repair system files; 3. Download and re-register the missing DLL files; 4. Update or reinstall the graphics card driver to ensure the normal graphics module; 5. Check program compatibility and try to run as an administrator. In most cases, in order

How to fix Microsoft Office error code 30183-27 How to fix Microsoft Office error code 30183-27 Jul 28, 2025 am 12:14 AM

Error code 30183-27 is usually caused by insufficient permissions or system conflicts. 1. Run the installer as an administrator and check whether the downloaded file is locked; 2. Clean the temporary folders of the system (%temp%, temp, AppData\Local\Temp) and free up disk space; 3. Temporarily close the antivirus software or firewall to prevent interference with the installation; 4. Use Microsoft's official repair tools such as Microsoft SupportandRecovery Assistant or Office Deployment Tool (ODT) to troubleshoot and install; 5. Try to restart the computer before installing. Follow the above steps to solve the problem in most cases.

How to fix error code 0x80070017 How to fix error code 0x80070017 Aug 02, 2025 am 04:20 AM

Windows Update Error 0x80070017 is usually caused by system files, caches or disk errors, and is not necessarily a hard disk corruption. The solution is as follows: 1. Use SFC and DISM tools to repair system files, and run sfc/scannow and DISM commands in turn; 2. Clear the Windows Update cache, and delete the SoftwareDistribution folder contents after stopping the service; 3. Run chkdsk to check for disk errors, which can be executed in the graphical interface or command prompt; 4. Update or rollback the driver, especially the storage controller and hard disk drive. In most cases, the first three methods can be solved. If it still cannot be handled, it may be a hardware problem or the system needs to be reinstalled.

How to fix 'The data area passed to a system call is too small' How to fix 'The data area passed to a system call is too small' Jul 25, 2025 am 12:38 AM

When encountering the "thedataareapassedtoasystemcallistoosmall" error, 1. First update or reinstall the network card driver, you can update or manually install the latest version through the device manager. Virtual machine users can try to delete and re-add the virtual network card; 2. Modify the registry and adjust the LanmanWorkstation parameters, locate the specified path and set the MemorySize to 1048576, and add FileInfoCacheEntriesMax and FileObjectCacheEntriesMax to optimize the cache; 3. Check LanmanWorkstation, Server and TCP

How to fix task scheduler not running task How to fix task scheduler not running task Jul 30, 2025 am 01:54 AM

Checkthetriggersettingstoensuretheyareenabledandcorrectlyconfiguredwiththerightdate,time,andrecurrence;2.Verifytheactionsettings,includingcorrectprogram/scriptpathsandproperinterpreterusage,especiallyforscriptsusingpowershell.exewith-ExecutionPolicyB

What's wrong with the phone calling without sound What's wrong with the phone calling without sound Aug 13, 2025 pm 06:09 PM

The reasons why there is no sound on the phone call include: hardware problems (damaged speakers, blocked earpiece holes, poor connector contact), software problems (volume setting too low, silent mode is turned on, system failure), network problems (weak signal strength, network congestion), and other reasons (Bluetooth headsets are connected, application interference). Solutions include: checking the hardware, adjusting the volume settings, turning off the silent mode, restarting the phone, updating the system, disconnecting the Bluetooth headset, and uninstalling the problematic application. If it still cannot be solved, please contact technical support.