4-digit digital electronic clock microcontroller digital clock DIY electronic production parts c51 4-digit clock DIY kit

The microcontroller program in this kit has been written and no source code or program is provided.

A Four Bit Electronic Clock Kit Based on AT89C2051

Power supply voltage: 3V-5V Recommended: 5V Travel time is more accurate

PCB size: length 52mm * width 42mm

Function: 1. Second correction (for precise timing)

2. It can be switched to a minute second independent display interface

3. On hour reporting (8-20 on hour reporting for 3 seconds,can be turned off)

4. Two way alarm settings (alarm function can be turned off)

Kit features: A. Using a 0.56-inch clock dedicated red digital tube for display;

B. Imported AT89C2051 as the main control chip;

C. The 1.2mm thick PCB is made of military grade FR-4 board;

D. Accurate travel time with an error range of -1 to+1 second every 24 hours