Learn how to built a digital clock by putting all the parts and follow the instrution,

Function:

1. Seconds correction (for precise School)

2. Switch to every minute independent display interface

3. whole point of time (8-20 o\'clock chime can be turned off)

4. Two alarm settings (you can turn off the alarm function)



Kit Features:

A. 0.56 inch special red digital clock for display;

B. Import AT89C2051 for master chip;

C.1.2mm thick PCB made from military grade FR-4 board;

D. accurate travel time, travel time error range error -1 to +1 seconds every 24 hours.



NOTE:

This produce is DIY kits, not the end product!  We don't provide technical assistance please make sure you are familiar with the product before purchasing. 25