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Customize the mini2440 wince startup interface process My display is 7-inch, so I should make a 800*480 pixel image according to the resolution. The detailed steps are as follows: 1. I made it using Photoshop, for example: 2. Use BMP 2t.exe to convert the image. enter the name of the BMP 2t Space Image in the command line, as shown in figure > BMP 2t forhibaidu.bmp A forhibaidu. h file with the same

1, the number of partitions, GPT seems to be able to support unlimited partitions, but only 128 on window, and the GPT partition is not divided into primary partition, logical partition, it can be understood that all are primary partitions, it is equivalent to allow you a partition of a system, 128 systems. And this is the MBR can not do, MBR only have four systems, if you want more than four partitions, it will have to sacrifice to install a system of the primary partition, that is, to replace

significantly slow down the speed of sorting. The median estimate can be obtained by randomly selecting three elements and using their median value as the pivot element. In fact, randomness does not help much, so the general practice is to use the median value of the three elements on the left, right, and center positions as pivot elements. It is clear that the three-digit median split method eliminates the bad situation of pre-sorted inputs and reduces the number of comparisons of the fast row

Chen Kozhan===========Typically, our disks are MBR partitioned tables, but MBR disks can only support up to 2T of space, so for more than 2T of space will have to takePartitioning tables with GPT============================================1, hard disk partition: A hard disk can be divided into multiple partitions, each partition is independent of each other, access to each partition is like access to a hard

replace it into a logical partition.On security, GPT is more secure because partitioned tables are backed up, and a validation algorithm is added, and once a virus infection or misuse can be discovered in a timely manner, use a secure backup of the partition table to remediate.On the partition capacity, GPT can identify hard disks larger than 2T, and the MBR will need to shut down the partition in use before the maximum

installation the first step in Linux is to create a disk system , and the creation of a system is divided into two main steps :1. Create the partition , 2. creating a file systemTo Create a partition :Common three commands fdisk,partedfdisk: It's the most common.Limitations :1. Fdisk does not support GPT disks , which means that it cannot partition partitions larger than 2T ( for example )2. dividing up to a maximum of six partitions# FDISK/DEV/SDB Wa

The Fdisk partitioning tool, which has a partition format of MBR, is characterized by a maximum of 4 primary partitions and a disk size not exceeding 2T. and the GPT partition format, break through these restrictions, it does not have a primary partition, extended partition, logical partition of the points, on a disk can be divided into 128 partitions, support more than 2T partition, the maximum volume up t

approximately 14%Example: The sequence to be sorted is: 8 1 4 9 6 3 5 2 7 0The left is: 8, the right is 0, the middle is 6.We take three numbers here to sort the middle number as the pivot, then the pivot is 6Note: When selecting the middle axis value, it can be selected from the middle left and right three medium selection to five elements or more elements, in general, there will be (2t+1) mean partition method (median-of-(

will significantly slow down the speed of sorting. The median estimate can be obtained by randomly selecting three elements and using their median value as the pivot element. In fact, randomness does not help much, so the general practice is to use the median value of the three elements on the left, right, and center positions as pivot elements. It is clear that the three-digit median split method eliminates the bad situation of pre-sorted inputs and reduces the number of comparisons of the fas

, shown on the hard disk, is the page in the cylinder or the disk block (block). If you persist the index to memory, it only takes one time.Efficient basis for B-trees: data is sorted.II: B-Tree structureLet's start with a classic picture:Here is a structure diagram of the B-tree stored in the hard disk.Add: 17,35 in the root node is called a keyword (key), and more complex types of data are often attached to it in practice.Another dull definition of the paragraph:1: Each non-root node has at le

7.4-1T (n) =max0≤q≤n−1 (t (q) +t (n−q−1)) +θ (n) ≥t (0) +t (n−1) +θ (n) =θ (n2) \begin{align} T (n) = \max_{0 \le q \le n-1} (t (q) + t (n-q -1) + \theta (n) \ \ge T (0) +t (n-1) + \theta (n) \ =\theta (n^2) \end{align}So t (n) =ω (n2) t (n) =\omega (n^2). 7.4-2The best case is T (n) =2t (N/2) +θ (n) t (n) =2t (N/2) +\theta (n), using the main method to get T (n) =θ (NLGN) t (n) =\theta (n\lg N). 7.4-3F