DESCRIPTION

A digital clock based on ATmega644 MCU

This clock consist of two boards:
- the first display board contains four 0.8 inch. single digit numerical displays and one 2x16 chars LCD-display.
- the second board contains ATmega644 MCU with necessary periphery: voltage regulator, light sensor, temperature sensor, buttons, programming connector, 32.7680kHz crystal, DCF77 receiver with ferrite core.