Question: Design the BCD-to-seven-segment decoder which displays even numbers only & switch off all the segments when number at the input is odd. You need to

Design the BCD-to-seven-segment decoder which displays even numbers only & switch off all the segments when number at the input is odd.           

You need to perform following steps;

Draw the truth table

Using K-Maps find the simplified expressions for segments a, b & e

Implement the circuit of segment b using NAND gates only.

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