Tools

4-to-16 decoder using 3-to-8 decoder (74138).

Procedure


  1. Click on the Component button to place components on the table.

               

Fig. 1 Components

  1. Make connections as per the circuit diagram and pin diagram of ICs or according to connection table.

Fig. 2 Circuit Diagram of 4-to-16 decoder

Fig. 3 Pin Diagram of IC 74138

Fig. 4 Pin Diagram of IC 7404

Table 1: Connection table

  1. Click on Check Connections button. If connections are right, click on ‘OK’, then Simulation will become active.
  2. Provide the input by clicking toggle switches A, B, C and D.
  3. Fill the observed values in the Truth Table.
  4. Verify Truth Table by clicking on Check button, if outputs are correct then click on OK.
  5. Click on the Reset button to reset the page.