Square LED screen and in the name of the Taipei business center of advertisement, the advertisement has been playing more than a month, this time of the day, this advertisement will appear in my sight. Have no interest to us, also be the advertisement publicity attracted business center. Although I am just a small staff, no right and useful to understand this stuff, but more about one thing than to know a thing a lot better, and who can tell whether they are able to use this little knowledge. However, I still feel feel shy, feel shy to have a deep understanding, I was afraid of being laughed at all.