Hongnan Zhang Chao Jiang Yayou Huang Saichun Hu Design of Infrared Signal Emission Based on MCS-51 Microprocessor. 43-45 2008 ICNSC http://dx.doi.org/10.1109/ICNSC.2008.4525180 conf/icnsc/2008 db/conf/icnsc/icnsc2008.html#ZhangJHH08