This can only be made possible by the help of these logic gates and 8-three input AND gates. From the truth table of the 3 line to 8 line of our combination logic, the logic expressions can be define as From the given truth table we can note that one of the outputs can be selected at any given single input. Here we can do the selection of the eight outputs based on the three given inputs and therefore we can have the truth table that is shown below. The circuit is made up of 8 AND and 3 NOT gates. From the circuit designed through the NI Multisim, I can note that the inputs are represented through A, B and C while the outputs are represented by the U4, U5, U6, U7, U8, U9, U10 and U11. This in real sense forms the 3- to -8 -line decoder. I made a design of the three-line input to eight-line output combination circuit.
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