MACRO INSTRUCTION Meaning and
Definition
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A macro instruction, in the context of computer programming, refers to a single complex instruction that is represented by a concise sequence of simpler instructions or commands. It acts as a shorthand or abstraction for commonly performed operations in a program. These macro instructions are typically defined by the programmer to simplify and expedite the coding process.
Macro instructions are extensively used in assembly language programming, where they can be defined as a set of assembly language statements that are given a unique name or identifier. This name is used to invoke the macro within the program. When the program is assembled, the macro invocation is replaced by the corresponding sequence of assembly language instructions.
The purpose of macro instructions is to reduce code duplication and increase code modularity. By encapsulating a group of frequently used instructions into a single macro, the programmer can save time and effort, as they only need to define and modify the macro instead of typing the complete sequence of instructions every time it is needed. Additionally, macros enhance code readability and maintainability by providing meaningful names to commonly performed operations.
The substitution process of a macro instruction occurs during the assembly phase, before the program is executed. When the macro invocation is encountered, the assembler searches for the macro definition and replaces the macro invocation with the corresponding sequence of instructions. This expansion or substitution process allows for efficient and concise coding while generating the complete set of instructions necessary for the execution.
Common Misspellings for MACRO INSTRUCTION
- nacro instruction
- kacro instruction
- jacro instruction
- mzcro instruction
- mscro instruction
- mwcro instruction
- mqcro instruction
- maxro instruction
- mavro instruction
- mafro instruction
- madro instruction
- maceo instruction
- macdo instruction
- macfo instruction
- macto instruction
- mac5o instruction
- mac4o instruction
- macri instruction
- macrk instruction
Etymology of MACRO INSTRUCTION
The word "macro instruction" is derived from two different sources.
1. "Macro" comes from the Greek word "makros", meaning "long" or "large". In the context of computing, "macro" refers to a series of instructions or a single instruction that represents a complex operation or set of operations. It is often used to automate repetitive tasks by condensing several commands into a single command.
2. "Instruction" comes from the Latin word "instructio", which means "arrange" or "provide with information". In the context of computing, an instruction refers to a command given to a computer to perform a specific operation or task.
When combined, "macro instruction" refers to a single command or a series of commands that are used to represent a complex set of operations or automate tasks in computing.
