Answer:
attached below is the detailed solution
Explanation:
Attached below is a detailed solution a BCD decoder( 4 inputs and 7 outputs ) used to drive a seven digit display
Prime Implicants are gotten from the maximum adjacent cells found in the K -map WHILE essential prime implicants ( ESI ) are prime implicants that combine with a minimum of one term which cannot be covered by another prime implicant.
D)For a : essential implicants includes all its implicants
For d : essential implicants includes all its prime implicants