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[Documents] pointer007 DL : 0: 指针是Ｃ语言中广泛使用的一种数据类型。运用指针编程是Ｃ语言最主要的风格之一。利用指针变量可以表示各种数据结构；能很方便地使用数组和字符串；并能象汇编语言一样处理内存地址，从而编出精练而高效的程序。指针极大地丰富了Ｃ语言的功能。学习指针是学习Ｃ语言中最重要的一环，能否正确理解和使用指针是我们是否掌握Ｃ语言的一个标志。同时，指针也是Ｃ语言中最为困难的一部分，在学习中除了要正确理解基本概念，还必须要多编程，上机调试。只要作到这些，指针也是不难掌握的。-target is C language widely used in a data type. Guidelines used C programming language is the most important one of the style. Use pointer variables can be expressed various data structure; Can be very convenient to use arrays and strings; and like assembly language can deal with the same memory address, which came up with a streamlined and efficient procedures. Guidelines have greatly enriched the C language function. Learning targets C language learning is the most important aspect of a the correct understanding and use of indicators is the availability of a C language signs. Meanwhile, the target is C language most difficult part of the study, in addition to correctly understand the basic concepts, There was also a need to more programming, debugging on the plane. If achieved these tar
Date : 2026-01-09 Size : 19kb User : 崔太军
[Documents] Storage-Management DL : 0: 一、目的要求 1、通过编写和调试存储管理的模拟程序以加深对存储管理方案的理解。熟悉虚存管理的各种页面淘汰算法。 2、通过编写和调试地址转换过程的模拟程序以加强对地址转换过程的了解。 -First, the purpose of the requirements 1, through the preparation and debugging of analog storage management procedures in order to deepen understanding of storage management solutions. Familiar with the virtual memory management algorithm for page-out. 2, through the preparation and debug address translation process simulation program to enhance the understanding of the process of address translation.
Date : 2026-01-09 Size : 55kb User : Anson
[Documents] czz DL : 0: 指针是一个特殊的变量，它里面存储的数值被解释成为内存里的一个地址。要搞清一个指针需要搞清指针的四方面的内容：指针的类型，指针所指向的类型，指针的值或者叫指针所指向的内存区，还有指针本身所占据的内存区。-Pointer is a special variable, the value stored inside it is interpreted as a memory address. To find out a pointer to a pointer need to find out four aspects: a pointer type, pointer type, the pointer value or called pointer points to memory area, as well as the pointer itself occupies memory area.
Date : 2026-01-09 Size : 82kb User : 余家泽
[Documents] U-Boot启动第二阶段代码分析 DL : 0: U-Boot第一阶段的启动流程。(nandflash启动，把nand的4k代码考到sram中，因为nand没址线，不能映射到内存，所以通过sram进行过度，sram中4k代码把整个uboot拷贝到sdram上，初始化好堆栈，为c语言提供条件，进入uboot的第二阶段！ )这个阶段主要是初始化硬件设备，为加载U-Boot的第二阶段代码准备RAM空间最后跳转到lib_arm/board.c中start_armboot函数，这是第二阶段的入口点。(U-Boot first phase of the startup process. (second stage nandflash start, NAND 4K code to test SRAM, because NAND did not address line, cannot be mapped into memory, so through the SRAM 4K code in SRAM over the whole uboot copy to the SDRAM, a good initialization stack, provide the conditions for the C language into uboot! This stage is mainly to initialize hardware devices, to prepare RAM space for loading the U-Boot's second stage code, and finally jump to start_armboot function in lib_arm/board.c, which is the entry point of the second stage.)
Date : 2026-01-09 Size : 128kb User : 张伟12
[Documents] new scan converting scheme and advanced graphics DL : 0: A new scan conversion scheme and memory. This may cause conflicts and reduce the video memory architecture with advanced system performance. graphics for raster scan radar display are proposed in this paper. By taking advantage 2). In order to display the radar signals it is of succession of radar range scan, the necessary to convert form the polar format into Cartesian coordination increments(0 or 1) of Cartesian co-ordinates which match the raster scan every two axial adjacent points are pre- format on the screen. In high rotating rate and high calculated and stored and then the Cartesian transmitting frequency situation, the high speed and coordination can be reconstructed by real time scan converting is difficult. In addition. counting the increments realtimely when artifacts called "dead address." and "moire" will be converted . This new approach works quickly caused by digital scan converting . and precisely and can overcome artifacts in 3). There is contradiction between the versatility visual effects. The advanced graphics flexibility and low cost, compactness. functions of this system greatly improve the display performance , especially the ability of A modularized system which has perfectly solved plotting extracted data. A practical display these problems is introduced in following sections. system based on these principles is developed and implemented . The excellent result 2. System Architecture proves its feasibility and versatility.
Date : 2024-10-18 Size : 290.46kb User : maxtechsmith@gmail.com