win7 快速启动栏恢复

xp时代的快速启动栏带来方便一直觉得很好用,这下win7里默认不显示了。

已多次搜索解决了这个问题, 还是记录一下吧,免得又去查。

  1. 右键任务栏,打开”工具栏”->”新建工具栏”。
  2. 在打开的对话框的文件夹输入框中输入:%userprofile%\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch
  3. 好了,快速启动栏出来了,后面就是调整位置,就不详写了。

 

labview7.1 the license file is unavailable on localhost

今天在搞Jabil Test,用labview编写一个dll, 然后用C#去封装成Jabil Test可以调用的dll。

用labview2013, 2016都试过,写出来的dll, C#再封装是成功的,但Jabil Test调用就报错。

后来想想,是不是要用低版本labview试试, 于是就安装labview7.1, 但安装完成后一直打不开,报如下错误:

“the license file is unavailable on localhost”

反复折腾下来,才发现是license manager里没有加载license文件,奇怪的是以前安装完就会有的啊,不知道什么情况下搞没了,好吧知道原因为好解决了。

1.在 C:\Program Files (x86)\National Instruments\Shared\License Manager\Bin\nilmUtil.exe路经下打开license manager:

2.把lic文件:C:\Program Files (x86)\National Instruments\Shared\License Manager\Licenses\LabVIEW_LabVIEW_070100.lic加载进去。

labview就可以打开了。

参考了:http://forums.ni.com/t5/forums/v3_1/forumtopicpage/board-id/170/thread-id/454745/page/2

 

大恒图像 Link

http://www.daheng-image.com/

今天看Jabil Test里的 帮助看到相关的一些函数:

DH_CameraADCControl

DH_CameraAGCControl

DH_CameraBegin

DH_CameraClose

DH_CameraEnableVideoMirror

DH_CameraGetBlankingSize

DH_CameraSetBlanking

DH_CameraSetExposureTime

DH_CameraSetOutput_Window

DH_CameraSetResolution

DH_CameraSetShutterTime

DH_CameraSetSnapMode

DH_CameraSetSnapSpeed

DH_CameraSnapShot

DH_CameraSnapShot_Color

记录一下。

AES SHA 区别

SHA is a family of “Secure Hash Algorithms” that have been developed by the National Security Agency. There is currently a competition among dozens of options for who will become SHA-3, the new hash algorithm for 2012+.

You use SHA functions to take a large document and compute a “digest” (also called “hash”) of the input. It’s important to realize that this is a one-way process. You can’t take a digest and recover the original document.

AES, the Advanced Encryption Standard is a symmetric block algorithm. This means that it takes 16 byte blocks and encrypts them. It is “symmetric” because the key allows for both encryption and decryption.

https://stackoverflow.com/questions/990705/whats-the-difference-between-sha-and-aes-encryption

http://www.cppblog.com/arthaslee/archive/2010/12/01/135186.html

https://www.quora.com/What-is-the-difference-between-SHA-2-and-AES

http://www.willrey.com/support/ssl_des.html

octave

GNU Octave is a high-level language, primarily intended for numerical computations. It provides a convenient command line interface for solving linear and nonlinear problems numerically, and for performing other numerical experiments using a language that is mostly compatible with Matlab. It may also be used as a batch-oriented language.

more about octave

官网:

https://www.gnu.org/software/octave/

doc:

https://www.gnu.org/software/octave/doc/interpreter/

安装, 因为正在使用ubuntu16.04作操作系统, 所以很自然的用命令安装了:

命令行安装后查看版本是4.0.0, 官网到2017-04-18时的已到4.2.1。也试过下载原码安装,没成功报错如下, 就没再去折腾了。先用用再说。

configure: error: A BLAS library was detected but found incompatible with your Fortran 77 compiler settings.