Binary decoders can be cascaded together to form a larger decoder circuit. Using two 2 input decoders, 4 input decoders can be constructed, by cascading each other.
Dragnet code decoder chart

Word Decoder Generator
Decodable Sentence Generator - Phonics & Stuff
DIY - DTMF Tone Generator and Decoder Circuits | EngineersGarage


Decoder Puzzle Generator
Description of the NMRA-DCC Loco Decoder with ATtiny15


Digital logic circuit of a 3:8 decoder with an enable pin
Anagram Decoder Generator
Create the ultimate escape room or puzzle game with this free printable decoder wheel!
Description of the NMRA-DCC Loco Decoder with ATtiny15










74ls47 bcd to 7 segment decoder driver
Logic circuit of a 3:8 decoder using AND gates
Kids can make their own DIY secret spy decoder wheel for writing and decoding secret messages. Use the free printable and make a secret code! #WelcometoNanas #MessageDecoder #DIYDecoderWheel #SecretMessageDecoder