Usually, almost all 7-segment decoder ICs have a blanking input (RBI ... As a bonus, you can build your own LED display brightness controller circuit using the ubiquitous 555 chip!

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 ...

[Fran] demonstrates the display running with a CD4511B BCD-to-7-segment decoder, hooked up with a bunch of 3904 power transistors to get the chip working with filament bulbs instead of LEDs.