Book References

1. Digital Logic and Computer Design by Morris Mano 4th Edition.
2. Digital Design: An Embedded Systems Approach Using VERILOG by Ashenden.
3. Digital System Test and Testable Design, by Zainalabedin Navabi.

Web References

1. https://electricalworkbook.com/bcd-to-excess-3-code-converter-circuit/
2. https://accendoreliability.com/digital-circuits-stuck-fault-model/