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计算机技术的第一次出现在美国的1…
One of the first occurrences of computer technology occurred in the USA in the 1880s. It
was due to the American Constitution demanding that a survey is undertaken every 10 years.
As the population in the USA increased, it took an increasing amount of time to produce the
statistics. By the 1880s, it looked likely that the 1880 survey would not be complete until
1890. To overcome this, Herman Hollerith (who worked for the Government) devised a machine
which accepted punch cards with information on them. These cards allowed a current
to pass through a hole when there was a hole present.
- 2022-02-20 02:14:45下载
- 积分：1
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freebsd reference manuals, system administrators can look at the administrator.
freebsd的参考手册，系统管理员管理员可以看看。-freebsd reference manuals, system administrators can look at the administrator.
- 2022-05-20 18:24:59下载
- 积分：1
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J2ME development environment
J2ME开发环境相关东西-J2ME development environment-related things
- 2023-03-21 08:10:03下载
- 积分：1
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This a JPEG encoding & decoding program of still image. It does not use level sh...
This a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compared for each DCT method. Effect of coarse and fine quantization is also examined. The execution time of 2 DCT methods is also checked. In addition, most energatic DCT coefficients are also applied to examine the effect in MatLab 7.4.0 R2007a. Input is 9 gray scale pictures & output is 9*9=81 pictures to compare. Blocking effect is obvious.
-This is a JPEG encoding & decoding program of still image. It does not use level shifting. Discrete Cosine transform (DCT) is performed both by classical & Chen s Flowgraph methods. Predefined JPEG quantization array & zigzag order are used here. RUN - LEVEL coding is used instead of Huffman coding. Compression ratio is compar
- 2022-12-20 21:45:04下载
- 积分：1
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侧重于模式识别的支持向量机分类功能及其应用
主要介绍模式识别中的SVM分类器的功能及应用-Focuses on pattern recognition SVM classifier function and application of
- 2022-08-21 00:54:58下载
- 积分：1
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Digital Image Processing Second Edition (Gonzalez) to achieve adaptive median fi...
《数字图像处理》第二版（冈萨雷斯）自适应中值滤波器实现- Digital Image Processing Second Edition (Gonzalez) to achieve adaptive median filter
- 2022-03-05 18:58:01下载
- 积分：1
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介绍了模拟后的操作系统
introduce a simulation of rtem OS-qemu
- 2023-01-29 10:55:04下载
- 积分：1
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ext 3.0 英文api, 这是ext发布的最新版本,对使用ext的人很有参考价值...
ext 3.0 英文api, 这是ext发布的最新版本,对使用ext的人很有参考价值-ext 3.0 English api, which is ext released the latest version of the use of the person of great reference value to ext
- 2023-04-10 01:45:04下载
- 积分：1
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关于c/c++的几本经典的书籍，和大家分享！
关于c/c++的几本经典的书籍，和大家分享！-With regard to c/c++ some of the many classic books, to share!
- 2022-08-10 16:59:49下载
- 积分：1
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学习视觉基本6（教学源代码）
Learn Visual Basic 6.0 （附教学源代码）-Learn Visual Basic 6.0 (teaching source code)
- 2023-04-03 20:40:04下载
- 积分：1
