By combining 49 of them he’s put together a soda bicarb diode steering circuit for a 7-segment display capable of showing the digits 0 to 9. He takes the idea for his diode from electrolytic ...

Well, it’s finally finished, and it looks great! Vintage seven segment digits make up the display. These digits work the same way that flip-dot displays work – current through each segment’s ...

Save guides, add subjects and pick up where you left off with your BBC account. Output devices such as motors, solenoids, bulbs, buzzers, relays, LEDs, and 7-segment displays are used in many ...