Combining the project of telescope control system, the key technologies such as locking frequency, phase circuit, real_time data collecting, display and hardware interrupt are also presented.
对实现高精度速度控制所采用的关键技术锁频锁相控制方法，计算机的实时数据采集、显示和硬中断等进行了介绍。
Phase-locking loop circuit, phase shifting method, and IC chip.
锁相环电路，相移方法，及集成电路芯片。
Locking phase ring circuit is widely used in Modern electronic technology.
锁相环路在现代电子技术中应用十分广泛。
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