The document discusses various conversions in digital logic, including binary to gray code, gray to binary, and binary to BCD. It also covers conversions between BCD and excess-3 code. Additionally, it includes Karnaugh maps for various bits (b0, b1, b2, b3).

1. Binary to Gray Code Conversion

4. Binary to Gray Code Conversion

5. Gray to Binary Conversion

6. K map for b0

7. K map for b1
K map for b2
K map for b3

8. Gray to Binary Conversion

9. Binary to BCD conversion

11. Binary to BCD

12. BCD to Excess-3 Code

14. BCD to Excess-3 Code

15. Excess-3 Code to BCD