Develop and simulate a behavioral model of the ABCD-to-seven-segment decoder described i...

Develop and simulate a behavioral model of the ABCD-to-seven-segment decoder described in Problem 4.9.

Reference: Problem 4.9

An ABCD-to-seven-segment decoder is a combinational circuit that converts a decimal digit in BCD to an appropriate code for the selection of segments in an indicator used to display the decimal digit in a familiar form. The seven outputs of the decoder (a, b, c, d, e, f, g) select the corresponding segments in the display, as shown in Fig. P4.9(a) . The numeric display chosen to represent the decimal digit is shown in Fig. P4.9(b) . Using a truth table and Karnaugh maps, design the BCD-to-seven-segment decoder using a minimum number of gates. The six invalid combinations should result in a blank display. (HDL—see Problem 4.51.)