Abstract
This paper introduces a step motor control system by using single-chip . The whole design consists of three parts AT89C51 single-chip system ,UCN5804B IC drive circuit and HD7279A keyboard dedication circuit .The single-chip has strong function of control including the increasing or inducing of the speed ,the position and time delay for step motor which all can be achieved through the software, Furthermore, different control demand of the step motor can be achieved through changing the software, without changing the hardware.
As the dedication circuit designed, the data can be input with keyboard, and step motor is controlled by these data, According to the demand, users car set the working model of step motor in real-time
Keywords: step motor ; single-chip; control system;
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