In this case, the end product is a binary-to-seven-segment decoder built from scratch. In engineering circles, this circuit is better known as a 7447 BCD to seven-segment decoder/driver ...

[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.

Usually, almost all 7-segment decoder ICs have a blanking input (RBI) connection to imply this type of brightness control. Because, the frequency in picture is above 50 Hz, unwanted flickering effect ...

In fact, any other combination of seven segments not available to seven-segment decoder-type drivers can be generated. Since this design uses an eight-bit latch, the remaining bit can drive a ...