machine code

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machine code

A programmer examines machine code on a computer monitor.

Definition

Noun: 1. A set of instructions coded so that the computer can use it directly without further translation: This is the lowest-level programming language, consisting of binary or hexadecimal codes that a computer's central processing unit (CPU) can execute immediately. It is the fundamental interface between software and hardware.

Usage
  • Machine code is the only language a computer's processor understands directly. All high-level programming languages (like Python or Java) must ultimately be translated into machine code before a program can run.
  • It is specific to the architecture of a particular CPU.
  • It is typically represented in binary (0s and 1s) or hexadecimal (base-16) notation for human readability.
Examples
Advanced Usage
  • "To execute machine code": To run or carry out the instructions contained in the machine code.
    • The CPU fetches and executes machine code instructions billions of times per second.
  • "Raw machine code": Emphasizes the unprocessed, fundamental nature of the code.
    • The exploit injected raw machine code into the program's memory buffer.
Variants and Related Words
  • Machine language: A synonym for machine code.
  • Opcode (Operation Code): The portion of a machine code instruction that specifies the operation to be performed.
  • Object code: The output from a compiler or assembler, often consisting of machine code ready for execution or linking.
  • Assembly language: A low-level programming language that uses mnemonics to represent machine code instructions, requiring an assembler to translate it into machine code.
Synonyms
  • Native code
  • Binary code (though this can sometimes refer more broadly to any data in binary form)
Related Phrases/Concepts
  • "To run at the machine code level": Operating with the utmost speed and direct hardware control, bypassing higher-level software layers.
    • For maximum performance, the graphics routine was written to run at the machine code level.
  • "Machine code instruction": A single command in machine code.
    • Each machine code instruction tells the CPU to perform a very specific task, like adding two numbers.
machine code

A programmer examines machine code on a computer monitor.

Noun
  1. a set of instructions coded so that the computer can use it directly without further translation

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