基于单片机的数字钟设计

his time, time calibration adjustment (manual time adjustment using the keys), and alarm function (set the timing, alarm sound at the set time). Time calibration and timing can be done through the keyboard. The alarm function uses I/O port timing to flip the level-driven passive buzzer. This paper mainly introduces the working principle and debugging process. Keywords: MCU, electronic clock, single-chip comprehensive simulation experimental device The graduation project "Design of Digital Clock based on MCU" was conducted from March 21, 2010 to June 25, 2010 in the Automation Institute, majoring in Automation. This project utilized the AT89S51 chip as the core of the design, along with necessary circuitry, to create a simple electronic clock. The clock was realized mainly through the DP-51PROC Single Chip Experimental Device, which allowed for the accurate display and adjustment of time. The clock had a time period of 24 hours and aimed to develop the capabilities of learning, designing, and developing hardware and software. The main functions of the electronic clock included time display, time calibration and adjustment through manual key input, and an alarm feature with the ability to set a specific time for the alarm to sound. The alarm function utilized I/O port timing to drive a passive buzzer. The paper detailed the working principle and the debugging process. Key Words: MCU, electronic clock, single-chip comprehensive simulation experimental device