A simple and speed method for character recognition was discussed in the thesis,and it is suitable to recognize poor element patterns or characters.The method is based on limited natural coding (LNC) property of poor element patterns and characters.The high speed character recognition and synchronic tracking re display can be obtained by means of the LNC in a hundredth second.The recognition sample can be easy obtained by self study.A detailed discussion is presented on the property of LNC,and it has been successfully applied to outdoor IC telephone timer test.