At risk of getting too feature-rich, you could then add two keys for a binary keyboard or add more LEDs to display 32-bit binary Unix Epoch time and see how long until your friends figure that one ...

The user interface is a single button for data entry and a single LED for feedback, making this binary keyboard look frivolously over-complicated. It uses a devilish chimera of Morse code and a ...

When any key on a keyboard is pressed, it needs to be converted into a binary number so that it can be processed by the computer and the typed character can appear on the screen.