Feichao High Quality C51 4 Bits Electronic Clock Electronic Production Suite DIY Kits C51 Electronic Clock

Feichao High Quality C51 4 Bits Electronic Clock Electronic Production Suite DIY Kits C51 Electronic Clock 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 Function:  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.