DIY Kits AT89C2051 Electronic Clock Digital Tube LED Display Suite Electronic Module Parts and Components DC 9V   12V

DIY Kits AT89C2051 Electronic Clock Digital Tube LED Display Suite Electronic Module Parts and Components DC 9V 12V

Regular price $8.99 Sale

Brand new and high quality.

1, 89C2051 digital clock kit, the control chip using AT89C2051, digital tube with two red two male LED digital tube, display clear high brightness, because it is scanning the display, so the digital tube abcdefg feet with the bus In parallel, changing the resistance value of R4-R10 can change the display brightness.

2, S1 button for calibration time, hold down for more than 2 seconds into the calibration time and exit, fast touch to adjust the time value.

3, the circuit has increased a 3V backup battery, power failure AT89C2051 using a backup battery, the clock will not stop, but the digital tube is not displayed, call back

This kit is very suitable for vocational school, college teaching and experimental use, and practical high, the installation can be used successfully.

Package included:
1 x set