众所周知，2G以上赛扬4代都是采用0.13微米制程的Northwood核心的，不过其核心步进（Core Stepping）也有B1，C1之分，而最近在国外上市的赛扬4代 2.5G、2.6G已经升级成最新的..
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本文介绍了以TMS320 LF 2407a为核心控制器的步进电机自动升降速控制系统与PC机的通讯及程序设计方法。
It's introduced that the controlling system in raising and reducing speed of stepper motor that is based on core controller, TMS320LF2407A, communicates with PC, as well as the method of programming.
文章介绍了计算机接口和步进电动机运转的控制线路及有关软件核心编程的要点。
This paper introduces the computer interface, controlling circuit for step motors' operation and key programming points of the software.
硬件部分采用PLC作为控制核心部件，由步进电机、接近开关、光电开关、热电阻、电磁阀等组成。
PLC is as the core of hardware system, and it comprises stepper motor, proximity switch, photoelectric switch, hot resistance, electromagnetic valve et al.
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