现在有些工厂的技术人员或其它业余电子开发者搞出来的某些产品，不是电路太复杂，就是功能太简单且极易被仿制。究其原因，可能就卡在产品未使用单片机或其它可编程逻辑器件上。-At present, some factory technical personnel or other amateur electronics developers to engage out of certain products, not the circuit is too complex, that is functional and easy to be too simple imitation. The reason may be stuck in the Product unused Singlechip or other programmable logic device.