Question: For the post-lab task students are required to write VHDL program for 4-bit Subtractor. The output of VHDL program is to be verified with VHDL

For the post-lab task students are required to write VHDL program for 4-bit Subtractor.

The output of VHDL program is to be verified with VHDL Test Bench Waveform for subtraction of any two 4-bit binary numbers. Perform five different subtraction operations.

Describe in lab report, the modifications needed to do in 4-bit Adder VHDL code to change it to 4-bit subtractor.

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