One Bit Comparator

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Preview of One Bit Comparator with 74LS08, 74LS86 and 74LS04 ICs

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Tutorial

Start by tapping on Next button.

1. Click on 'Next' button to Add ICs-74LS86, 74LS04 and 74LS08

Click on 'Next' button to Add ICs-74LS86, 74LS04 and 74LS08

2. Click on 'Next' button to Connect GND and VCC of ICs

Click on 'Next' button to Connect GND and VCC of ICs

3. Click on 'Next' button to Connect 'A' to Pin-1 of EX-OR Gate

Click on 'Next' button to Connect 'A' to Pin-1 of EX-OR Gate

4. Click on 'Next' button to Connect 'B' to Pin-2 of EX-OR Gate

Click on 'Next' button to Connect 'B' to Pin-2 of EX-OR Gate

5. Click on 'Next' button to Connect Pin-3 of Ex-OR to Pin-1 of NOT Gate

Click on 'Next' button to Connect Pin-3 of Ex-OR to Pin-1 of NOT Gate

6. Click on 'Next' button to Connect Pin-2 of NOT Gate to Output port as 'A=B'

Click on 'Next' button to Connect Pin-2 of NOT Gate to Output port as 'A=B'

7. Click on 'Next' button to Connect 'A' to Pin-1 of AND Gate

Click on 'Next' button to Connect 'A' to Pin-1 of AND Gate

8. Click on 'Next' button to Connect 'B' to Pin-3 of NOT Gate

Click on 'Next' button to Connect 'B' to Pin-3 of NOT Gate

9. Click on 'Next' button to Connect Pin-4 of NOT Gate to Pin-2 of AND Gate

Click on 'Next' button to Connect Pin-4 of NOT Gate to Pin-2 of AND Gate

10. Click on 'Next' button to Connect Pin-3 of AND Gate to Output port as 'A>B'

Click on 'Next' button to Connect Pin-3 of AND Gate to Output port as 'A>B'

11. Click on 'Next' button to Connect 'B' to Pin-5 of AND Gate

Click on 'Next' button to Connect 'B' to Pin-5 of AND Gate

12. Click on 'Next' button to Connect 'A' to Pin-5 of NOT Gate

Click on 'Next' button to Connect 'A' to Pin-5 of NOT Gate

13. Click on 'Next' button to Connect Pin-6 of NOT Gate to Pin-4 of AND Gate

Click on 'Next' button to Connect Pin-6 of NOT Gate to Pin-4 of AND Gate

14. Click on 'Next' button to Connect Pin-6 of AND Gate to Output port as 'A<B'

Click on 'Next' button to Connect Pin-6 of AND Gate to Output port as 'A<B'

Done

You have completed the tutorial. Power on the circuit to test the behavior.

Step-by-Step Procedure

Click on 'Next' button to Add ICs-74LS86, 74LS04 and 74LS08
Click on 'Next' button to Connect GND and VCC of ICs
Click on 'Next' button to Connect 'A' to Pin-1 of EX-OR Gate
Click on 'Next' button to Connect 'B' to Pin-2 of EX-OR Gate
Click on 'Next' button to Connect Pin-3 of Ex-OR to Pin-1 of NOT Gate
Click on 'Next' button to Connect Pin-2 of NOT Gate to Output port as 'A=B'
Click on 'Next' button to Connect 'A' to Pin-1 of AND Gate
Click on 'Next' button to Connect 'B' to Pin-3 of NOT Gate
Click on 'Next' button to Connect Pin-4 of NOT Gate to Pin-2 of AND Gate
Click on 'Next' button to Connect Pin-3 of AND Gate to Output port as 'A>B'
Click on 'Next' button to Connect 'B' to Pin-5 of AND Gate
Click on 'Next' button to Connect 'A' to Pin-5 of NOT Gate
Click on 'Next' button to Connect Pin-6 of NOT Gate to Pin-4 of AND Gate
Click on 'Next' button to Connect Pin-6 of AND Gate to Output port as 'A<B'

Block Diagram

ICs used in this circuit with pin diagram

74LS08

Quad 2-input AND Gates

74LS86

Quad 2-input Exclusive-OR Gates

74LS04

Hex Inverting Gates