BBSb4

LCD1602 Large Electronic Clock

Overview

System Design

Product Introduction:

This is an electronic clock designed based on a 51 microcontroller. It's only the size of an LCD1602 screen. The time adjustment button has a buzzer sound, and an alarm clock mode is included. An 18B20 temperature sensor is added, allowing you to clearly see the ambient temperature. However, the time is not saved after a power outage. I would appreciate guidance on the cause of this problem.
2. Function Description:
Button 1 selects between time adjustment and alarm clock modes. An "N" will appear in the lower right corner of the screen to activate alarm clock mode. In normal time display mode, pressing button 3 will display a "K" in the lower right corner of the screen to activate the alarm. If the alarm is not activated, it will not sound.
Button 2 selects the digit to be modified.
Button 3 increases the value, and button 4 decreases it.
(This is a beginner's code, so it may not be perfect yet. Please provide feedback.)

Design Files

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Update:2026-03-23 09:19:27

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