1. Bill Wagner. Effective C#. Beijing: Machinery Industry Press, 2005. 11.
2. Willianm S Davis. System Analysis and Design: A Structured Approach. Addison_Wesley Publishing Company, 1983. 76~78.
3. Princeton Technology Corporation in Taiwan website , PT2262 and PT2272 technical Data [EB/OL]. http: www. xie-gang. com/PT22622 272. html, 2003-12-10.
4. Li wancheng, Chen huitang. Home Automation System [J]. Systems Engineering and Electronics, 1997, (12): 58-60.
5. CH341A Chip Guide [EB/OL]. http: /www. icpdf. com/product/ CH341A. pdf.