“摇摇棒”是基于人眼视觉暂留原理而产生的, 当进行摇动时，由于人的视觉暂留会在发光二极管摇动区域产生一个视觉平面，从而达到在该视觉平面上传达信息的作用。本文介绍了以STC89C52单片机控制为主控芯片、配合高亮度LED二极管以及水银开关构成简易摇摇棒的设计过程，通过分时刷新20个发光二极管来显示输出文字或图案等信息。并在此基础上,利用DS1302时钟芯片显示当前时间,可通过按键对时间进行设置("Shake bar" is generated based on the principle of persistence of vision, when shaken, because of the persistence of vision will produce a visual plane in the light emitting diode shake area, so as to achieve the role of conveying information in the visual plane. This paper introduces the STC89C52 microcontroller as the main control chip, with high brightness LED diode and the mercury switch design process simple shake bar, refresh 20 LEDs to display the output text or pattern information through time. On this basis, the DS1302 clock chip is used to display the current time, and the time can be set by the button)