add-string

导航栏，精选ios编程学习源码，很好的参考资料。(The navigation bar, select learning IOS programming source code, a good reference.)

本书籍讲诉的是objective-C编程中的ARC规范，是高手的必看书籍。(This book stresses that the ARC specification of objective-C programming, is the master of the books.)

一个选择器特效大全的例子：KNMultiItemSelector，IOS编程学习源码，很好的参考资料。(A selector effects Guinness examples: KNMultiItemSelector, learning IOS programming source code, a good reference.)

use that for adjustament in matriz for espectrus

Sample Code which helps to understand how to use LocationManager.

a sample c embedded program for beginners

侧边伸缩导航栏效果，精选ios编程学习源码，很好的参考资料。(The side effect of stretching the navigation bar, select learning IOS programming source code, a good reference.)

Implementation of Playfair Cipher in C

主要用途是对抗多径衰落。由于多径衰落的存在，使得同一个帧由于路径不同，到达用户端的时延有先有后。在相关的频域上的会造成子载波之间的相互干扰，影响 性能。另外，由于有了循环前缀，使得IFFT FFT操作把原来的线性卷积变成循环卷积，大大简化了相应的信号处理复杂度(The main purpose is to fight against multipath fading. Due to the presence of multipath fading, the first after they have the same frame different paths to reach the client delay. Would cause mutual interference between sub-carriers in the frequency domain, affecting performance. In addition, thanks to the cyclic prefix, so IFFT FFT operation to the linear convolution of the original into a circular convolution, greatly simplifying the corresponding signal processing complexity)

safari调用第三方APP demo 可以直接调试成功 供新手参考 (safari called third-party APP demo success can be directly debug reference for the novice)