indexed addressing

简明释义

变址寻址

英英释义

例句

1.By employing indexed addressing, programmers can easily manipulate data structures with dynamic sizes.

通过采用索引寻址，程序员可以轻松操作具有动态大小的数据结构。

2.The use of indexed addressing in assembly language simplifies the process of accessing arrays.

在汇编语言中使用索引寻址简化了访问数组的过程。

3.In computer architecture, indexed addressing allows for efficient data retrieval by using an index register.

在计算机架构中，索引寻址通过使用索引寄存器实现高效的数据检索。

4.Many modern programming languages support indexed addressing to enhance code readability and maintainability.

许多现代编程语言支持索引寻址以增强代码的可读性和可维护性。

5.When optimizing algorithms, understanding indexed addressing can lead to significant performance improvements.

在优化算法时，理解索引寻址可以带来显著的性能提升。

作文

In the realm of computer architecture, various addressing modes play a crucial role in determining how data is accessed and manipulated. One such method is indexed addressing, which offers a unique way to access memory locations using an index value. This technique is particularly beneficial in scenarios where data structures such as arrays or tables are involved. By utilizing indexed addressing, programmers can efficiently calculate the address of a specific element within these structures without having to perform complex arithmetic operations manually.To better understand indexed addressing, it is essential to break down its components. The term 'index' refers to a variable that holds a value used to offset from a base address. In simpler terms, it allows the processor to access different memory locations by adding the index value to a base address. This is particularly useful when dealing with large datasets, as it minimizes the amount of code required to traverse through the elements.For instance, consider an array of integers that needs to be processed. Instead of writing separate instructions for each element, a programmer can use indexed addressing to loop through the array efficiently. By initializing an index variable to zero and incrementing it with each iteration, the programmer can access each element in the array by simply adding the index to the base address of the array. This not only simplifies the code but also enhances performance, as the CPU can execute the loop more rapidly than if each element were addressed individually.Moreover, indexed addressing is not limited to one-dimensional arrays. It can also be applied to multi-dimensional arrays. In such cases, the index can be a combination of multiple values, allowing for the calculation of addresses in a more complex data structure. This flexibility makes indexed addressing a powerful tool in programming, especially in languages that support advanced data structures.However, while indexed addressing provides numerous advantages, it is essential to recognize its limitations. For instance, the size of the index may be constrained by the architecture of the system. If the index exceeds the maximum allowable value, it may lead to errors or unexpected behavior. Additionally, programmers must ensure that the base address is correctly defined; otherwise, they risk accessing invalid memory locations, which can cause crashes or data corruption.In conclusion, indexed addressing is a vital concept in computer programming that greatly enhances the efficiency of data access and manipulation. By allowing programmers to use an index to calculate memory addresses, it simplifies code and improves performance, especially when working with large datasets or complex data structures. Understanding and mastering indexed addressing can significantly benefit developers, providing them with the tools needed to write more efficient and effective code. As technology continues to evolve, the importance of such addressing modes will only grow, making it essential for aspiring programmers to grasp these fundamental concepts.

在计算机架构领域，各种寻址模式在确定如何访问和操作数据方面发挥着至关重要的作用。其中一种方法是索引寻址，它提供了一种独特的方式来使用索引值访问内存位置。这种技术在涉及数组或表等数据结构的场景中尤其有用。通过利用索引寻址，程序员可以高效地计算这些结构中特定元素的地址，而无需手动执行复杂的算术运算。为了更好地理解索引寻址，有必要分解其组成部分。“索引”一词指的是一个变量，该变量保存用于从基地址偏移的值。简单来说，它允许处理器通过将索引值加到基地址上来访问不同的内存位置。当处理大型数据集时，这一点尤其有用，因为它最小化了遍历元素所需的代码量。例如，考虑一个需要处理的整数数组。程序员可以使用索引寻址高效地循环遍历数组，而不是为每个元素编写单独的指令。通过将索引变量初始化为零并在每次迭代中递增，程序员可以通过简单地将索引加到数组的基地址来访问数组中的每个元素。这不仅简化了代码，还提高了性能，因为CPU可以比单独寻址每个元素更快速地执行循环。此外，索引寻址不仅限于一维数组。它也可以应用于多维数组。在这种情况下，索引可以是多个值的组合，从而允许在更复杂的数据结构中计算地址。这种灵活性使得索引寻址成为编程中的强大工具，特别是在支持高级数据结构的语言中。然而，虽然索引寻址提供了许多优点，但必须认识到其局限性。例如，索引的大小可能受到系统架构的限制。如果索引超过最大允许值，可能会导致错误或意外行为。此外，程序员必须确保正确定义基地址；否则，他们可能会访问无效的内存位置，这可能导致崩溃或数据损坏。总之，索引寻址是计算机编程中的一个重要概念，极大地提高了数据访问和操作的效率。通过允许程序员使用索引计算内存地址，它简化了代码并提高了性能，尤其是在处理大型数据集或复杂数据结构时。理解和掌握索引寻址可以显著惠及开发人员，为他们提供撰写更高效、更有效代码所需的工具。随着技术的不断发展，这种寻址模式的重要性只会增加，使得有抱负的程序员掌握这些基本概念变得至关重要。