The amount of information the humble seven-segment display can convey is surprising. There are the ten numerals, dead-ringers or reasonable approximations for about half the alphabet, and even a few ...

When you’re debugging a board which has an ESP32, Raspberry Pi, or Arduino, it’s easy to slap on a small LCD display or connect via WiFi to see what’s wrong. At least, that’s what the kids are doing.

Do you know how to read binary codes? Pretty impressive if you do, since they’re a computer’s language. Binary coding is a system of counting that boils down to two digits—one (1) and zero (0) that ...