Tutorial Start by tapping on Next button.
1. Click on 'Next' button to Add IC-74LS138 Click on 'Next' button to Add IC-74LS138
2. Click on 'Next' button to Connect GND and VCC of IC Click on 'Next' button to Connect GND and VCC of IC
3. Click on 'Next' button to Connect Input 'B0' to Select Line A Click on 'Next' button to Connect Input 'B0' to Select Line A
4. Click on 'Next' button to Connect Input 'B1' to Select Line B Click on 'Next' button to Connect Input 'B1' to Select Line B
5. Click on 'Next' button to Connect Input 'B2' to Select Line C Click on 'Next' button to Connect Input 'B2' to Select Line C
6. Click on 'Next' button to Connect 'G1' to Vcc Click on 'Next' button to Connect 'G1' to Vcc
7. Click on 'Next' button to Connect 'G2A' and 'G2B' to GND Click on 'Next' button to Connect 'G2A' and 'G2B' to GND
8. Click on 'Next' button to Add IC-74LS20 Click on 'Next' button to Add IC-74LS20
9. Click on 'Next' button to Connect GND and VCC of ICs Click on 'Next' button to Connect GND and VCC of ICs
10. Click on 'Next' button to Connect output 'Y7' to Pin-1 of 74LS20 Click on 'Next' button to Connect output 'Y7' to Pin-1 of 74LS20
11. Click on 'Next' button to Connect output 'Y6' to Pin-2 of 74LS20 Click on 'Next' button to Connect output 'Y6' to Pin-2 of 74LS20
12. Click on 'Next' button to Connect output 'Y6' to Pin-1 of 2nd 74LS20 Click on 'Next' button to Connect output 'Y6' to Pin-1 of 2nd 74LS20
13. Click on 'Next' button to Connect output 'Y5' to Pin-4 and Pin-9 of 74LS20 Click on 'Next' button to Connect output 'Y5' to Pin-4 and Pin-9 of 74LS20
14. Click on 'Next' button to Connect output 'Y5' to Pin-2 of 2nd 74LS20 Click on 'Next' button to Connect output 'Y5' to Pin-2 of 2nd 74LS20
15. Click on 'Next' button to Connect output 'Y4' to Pin-10 and Pin-5 of 74LS20 Click on 'Next' button to Connect output 'Y4' to Pin-10 and Pin-5 of 74LS20
16. Click on 'Next' button to Connect output 'Y3' to Pin-12 of 74LS20 Click on 'Next' button to Connect output 'Y3' to Pin-12 of 74LS20
17. Click on 'Next' button to Connect output 'Y2' to Pin-13 of 74LS20 Click on 'Next' button to Connect output 'Y2' to Pin-13 of 74LS20
18. Click on 'Next' button to Connect output 'Y2' to Pin-4 of 2nd 74LS20 Click on 'Next' button to Connect output 'Y2' to Pin-4 of 2nd 74LS20
19. Click on 'Next' button to Connect output 'Y1' to Pin-5 of 2nd 74LS20 Click on 'Next' button to Connect output 'Y1' to Pin-5 of 2nd 74LS20
20. Click on 'Next' button to Connect Pin-6 of 74LS20 to Output port as 'G2' Click on 'Next' button to Connect Pin-6 of 74LS20 to Output port as 'G2'
21. Click on 'Next' button to Connect Pin-8 of 74LS20 to Output port as 'G1' Click on 'Next' button to Connect Pin-8 of 74LS20 to Output port as 'G1'
22. Click on 'Next' button to Connect Pin-6 of 2nd 74LS20 to Output port as 'G0' Click on 'Next' button to Connect Pin-6 of 2nd 74LS20 to Output port as 'G0'
Done You have completed the tutorial. Power on the circuit to test the behavior.