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The microcontroller program in this kit has been written and no source code or program is provided.
Four-digit electronic clock kit based on AT89C2051
Supply voltage: 3V-5V Recommended: 5V walking time is relatively accurate
PCB size: length 52mm * width 42mm
1. Second correction (for accurate timing)
2. Support switching to the minute and second independent display interface
3. Support hourly chime (8-20 o'clock hourly, 3 seconds, this function can be turned off.)
4. Two-way alarm setting (supports turning off the alarm function)
Product features: A. Use 0.56 inch clock dedicated red digital tube for display;
B. Import AT89C2051 as the main control chip;
C.1.2mm thick PCB made of military grade FR-4 sheet;
D. Accurate travel time, the travel error range is -1~+1 seconds per 24 hours.