I find that if I’m trying to make a point with a student or a colleague about a circuit, sometimes the Falstad online simulator is worth a few thousand words. You can draw the circuit, play with the ...

What is a BCD to decimal decoder? The 74HC/HCT42 are BCD to decimal decoders. These decoders accept four active HIGH BCD inputs and provide 10 mutually exclusive active LOW outputs. The active LOW ...

The circuit was aimed to produce an electronic selector for ten alternative sources with the means of showing the result in a 7-segment display being driven by relays. 4511 – a BCD to 7-segment ...

We sure wish we’d had a teacher like [Danko Bertović]. He built this beautiful circuit sculpture to teach his students how to count in binary and convert it to decimal and hexadecimal. If you don’t ...