基于AT91RM9200的BootLoader设计与实现 ，依赖于CPU体系结构的代码，比如设备初始化、开关中断、初始化时钟等，通常都放在stage 1中，而且都用汇编来实现，以达到短小精悍的目的。而stage 2通常用C语言来实现，这样可以实现较复杂的功能，而且代码有较好的可读性和可移植性。
标签： BootLoader 9200 AT 91
上传时间： 2014-01-11
上传用户：zhangliming420
ystem will automatically delete the directory of debug and release, so please do not put files on these two directory.
标签： automatically directory release delete
上传时间： 2014-01-07
上传用户：yyq123456789
Playfair Cipher 1.not even the large number of keys in a monoalphabetic cipher provides security 2.one approach to improving security was to encrypt multiple letters 3.the Playfair Cipher is an example 4.invented by Charles Wheatstone in 1854,but named after his friend Baron Playfair Playfair Key Matrix 1.a 5X5 matrix of letters based on a keyword 2.fill in letters of keyword (sans duplicates) 3.fill rest of matrix with other letters Encrypting and Decrypting -plaintext is encrypted two letters at a time 1. if a pair is a repeated letter, insert filler like X’ 2. if both letters fall in the same row, replace each with letter to right (wrapping back to start from end) 3. if both letters fall in the same column, replace each with the letter below it (again wrapping to top from bottom) 4. otherwise each letter is replaced by the letter in the same row and in the column of the other letter of the pair
标签： monoalphabetic Playfair provides security
上传时间： 2017-05-25
上传用户：变形金刚
Please read your package and describe it at least 40 bytes. System will automatically delete the directory of debug and release, so please do not put files on these two directory.
标签： automatically describe package Please
上传时间： 2013-12-06
上传用户：dave520l
Jpeg Steganography Please read your package and describe it at least 40 bytes. System will automatically delete the directory of debug and release, so please do not put files on these two directory.
标签： Steganography describe package automat
上传时间： 2013-12-17
上传用户：努力努力再努力
This experiment uses the Blackfi n BF533/BF537 EZ-KIT to run a simple FIR fi lter on stereo channels at a sampling frequency of 48 kHz. The CYCLE register is embedded in the main program ( process_data.c) to benchmark the time needed to process two FIR fi lters. A background telemetry channel (BTC) is set up to display the cycle count.
标签： experiment Blackfi EZ-KIT channe
上传时间： 2013-12-27
上传用户：baiom
A bad thing never dies. 遗臭万年。 A bad workman always blames his tools. 不会撑船怪河弯。 A bird in the hand is worth than two in the bush. 一鸟在手胜过双鸟在林。 A boaster and a liar are cousins-german. 吹牛与说谎本是同宗。 A bully is always
上传时间： 2013-12-20
上传用户：iswlkje
Linux下视频捕捉的例子，使用video for linux two API编写，可以提供一个简单的流程，供以后加深。
上传时间： 2014-01-06
上传用户：叶山豪
In the last decade the processing of polygonal meshes has emerged as an active and very productive research area. This can basically be attributed to two developments: Modern geometry acquisition devices, like laser scanners and MRT, easily produce raw polygonal meshes of ever growing complexity Downstream applications like analysis tools (medical imaging), computer aided manufacturing, or numerical simulations all require high quality polygonal meshes as input. The need to bridge the gap between raw triangle soup data and high-quality polygon meshes has driven the research on ecient data structures and algorithms that directly operate on polygonal meshes rather than on a (most often not feasible) intermediate CAD representation.
标签： processing productive the polygonal
上传时间： 2017-06-03
上传用户：TF2015
System will automatically delete the directory of debug and release, so please do not put files on these two directory.
标签： automatically directory release System
上传时间： 2014-01-15
上传用户：hwl453472107
