1)2X4 DECODER / De-multiplexer

Step-1) Connect the supply(+5V)      to the circuit.
Step-2) First press "ADD" button to add basic state of your output in the given table.
Step-3) Press the switches to select the required inputs named "A" and "B". Also check their corresponding outputs named "Q₀" and "Q₁" and "Q₂" and "Q₃".
Step-4) Press "ADD" button to add your inputs and outputs in the given table.
Step-5) Repeat step 3 & step 4 for next state of inputs and their corresponding outputs.
Step-6) Press the "PRINT" button after completing your simulation to get your results.

2)4X2 ENCODER

Step-1) Connect the supply(+5V)      to the circuit.
Step-2) First press "ADD" button to add basic state of your output in the given table.
Step-3) Press the switches to select the required inputs "D₀" and "D₁" and "D₂" and "D₃". Also check their corresponding ouyputs named "Q₁" and "Q₀".
Step-4) Press "ADD" button to add your inputs and outputs in the given table.
Step-5) Repeat step 3 & step 4 for next state of inputs and their corresponding outputs.
Step-6) Press the "PRINT" button after completing your simulation to get your results.