Motion controller composed of general chip series is developed and quadruple differential circuit utilizing dual monostable multivibrators with schmitt trigger inputs and dual 4 _ line to l _ line data selectors or multiplexers is put forward 本论文研制了一种用常规芯片系列组成的运动控制器，提出了采用单稳态多谐振荡器和数据选择器的四倍频辨向电路。
