本文阐述了步进电机的基本知识和特性,提出了基于单片机控制和集成电路驱动的步进电机控制实现方法以及软硬件设计方法-This article explains the basics of stepper motor and characteristics of proposed control and integrated circuits based on single chip-driven stepper motor control method and hardware and softwa

实现密钥的安全控制和管理是整个应用系统安全的关键，《密钥管理系统》设计遵循《中国金融集成电路（IC）卡规范（1.0）》和《银行IC卡联合试点密钥管理系统总体方案》，整个系统遵循以下设计原则：-Achieve key security control and management of the entire application system security key, " Key management system" designed to follow the "