Flip Clock turns your iPhone into a retro-style timepiece. The $1 download mimics the old fashioned analog-digital clocks with flipping, plastic-card numbers (as seen waking up Marty McFly in the ...

A digital clock based on seven-segment displays? Not exciting. A digital clock with seven-segment displays that’s really big and can be read across a football field? That’s a little more interesting.

I’ve been through a lot of time-telling devices in my years. My dad made sure I could read an analog watch as soon as I could put one on my wrist, and I think I’ll always have some sort of sentimental ...

Digital clock projects have been with us since the 1970s, when affordable LEDs and integrated circuits became available. In 2026 most of them use a microcontroller, but for the AliExpress fans there’s ...