Introduction - If you have any usage issues, please Google them yourself
"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