字符识别是模式识别领域的一项传统的课题，这是因为字符识别不是一个孤立的问题，而是模式识别领域中大多数课题都会遇到的基本问题，并且在不同的课题中，由于具体的条件不同，解决的方法也不尽相同，因而字符识别的研究仍具有理论和实践意义。这里讨论的是用神经网络识别数字的问题.-Character recognition is a traditional field of pattern recognition issues, this is because character recognition is not an isolated problem, but the majority of subjects in the field of pattern recognition are the basic problems encountered, and in a wide range of topics, because of specific conditions are different, solutions are not the same, so character recognition research is still theoretical and practical significance. Discussed here is the number of neural network to identify problems.