中文说明：此代码有助于我们与每个键实现屏幕键盘是闪烁在使用MATLAB &不同频率；心理工具盒。这可以用来开发智力的参赛者需要在认知技术。
English Description：
This Code help us to implement the on-screen keyboard with each key is flickering at different frequencies using matlab & Psych-tool box. This can be used to develop the mental spellers which requires in Cognitive Technology.