A digital alarm clock re-purposed to display the time as a binary number. All the original electronics were removed and replaced with custom circuitry including an AVR microcontroller, display driver circuit, power supply, and a two-tone audio amplifier with speaker.
The hour is displayed with the vertical segments on the top row and the minute on the bottom row. It can also play an 8-bit song for the alarm.
The clock in Gray Code display mode.