INDEX REGISTER Meaning and
Definition
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An index register refers to a specialized register within a computer's central processing unit (CPU) that stores an offset or a base value to be used in addressing memory locations or performing calculations. It is commonly employed in microprocessors and is particularly useful in memory management and addressing during program execution.
The index register acts as an auxiliary storage space that holds a value, which is added to or subtracted from a memory or operand address, resulting in an effective address. This computed address allows for efficient access to data or instructions stored in memory. By modifying the index register's value, programmers can easily manipulate addresses and retrieve or modify data from different locations within the memory space.
Furthermore, the index register is often utilized in looping operations and arrays. By incrementing or decrementing the register's value, it becomes effortless to move through an array or iterate over a set of instructions or data, streamlining the execution of repetitive tasks.
In summary, an index register is a component of a CPU that holds a base or offset value to calculate memory addresses efficiently. It enhances memory management by allowing for dynamic address manipulation and simplifying array traversals. Its incorporation into microprocessors significantly contributes to the overall performance and effectiveness of a computer system.
Common Misspellings for INDEX REGISTER
- undex register
- jndex register
- kndex register
- ondex register
- 9ndex register
- 8ndex register
- ibdex register
- imdex register
- ijdex register
- ihdex register
- insex register
- inxex register
- incex register
- infex register
- inrex register
- ineex register
- indwx register
- indsx register
- inddx register
Etymology of INDEX REGISTER
The etymology of the word "index register" is as follows:
1. Index: The word "index" derives from the Latin term "index", meaning "pointer, informer, sign, indication". It entered the English language in the late 16th century, borrowed from Latin. The term "index" refers to an indicator or a pointer used for reference or classification purposes.
2. Register: The term "register" has its roots in the Latin word "regesta", which means "list". It was also influenced by the Old French word "registre". "Register" entered the English language in the late 14th century, referring to a written record or a list of names or events.
When combined, "index register" refers to a specific type of register used in computer science or computing systems.
Similar spelling words for INDEX REGISTER
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