external interruption meaning in English

外部中断
外岔断

This paper projects a utility subdividing drive system of step motor , which consists of digital control module , drive module and power module , it uses at89c52 single chip processor as the core , it realizes the external event or generates control signal by i / o interface , timer and external interruption , the system introduce pld device and isp technology to the design of phase sequencer , it simplified circuit and improved the anti - disturbing capability by using abel - hdl language , this system can realizes data memory , velocity digital control and led display , etc . this paper adopted firstly the single - chip technique to design control system , which replaced old complicated logic control circuit and simplified test process
本文研究了一种实用的步进电机细分驱动系统，由数字控制模块、驱动模块和电源模块组成，系统以at89c52单片机为核心，通过单片机的i o口、定时器计数器中断来实现外部事件监控以及控制信号的产生，系统将可编程逻辑器件( pld )器件和在系统编程( isp )新技术引入到细分驱动环行分配器的设计，通过abel _ hdl语言编程实现硬件软化设计和逻辑重构，大大简化了电路，并提高了电路抗干扰能力。使系统实现参数存储，速度数字控制，数码显示，进退刀控制等功能。