truth table for a 7-segment display decoder. It converts a binary input x[3..0] to a 7-bit code which drives each LED in an LED display am a bit confused can anyone just give a hint i want to produce a logic circuit for it i take it up from there cheers .
If you are doing it by "hand". You need to make a Karnaugh map for each segment and after that you will end up with SOP or POS that can be implement into logic gate circuit.
So the final circuit is made of 7 smaller circuit that link each segment to the input of the circuit.
The way to do this by hand is by drawing a K-Map. You will draw a table for each of the 8-outputs and find the Boolean expression by the help of which you can draw the digital circuit for each of the output separately.
If you are not familiar with the concept of K-Maps, then go through this