specify the size of a ROM ( Number of words and number of bits per words) that will accommodate the truth table for the following combinational circuit components:
- A binary multiplexer that multiplies two 4-bit numbers.
- A 4-bit adder-subtractor.
- A quadruple 2-to-1 line multiplexer with common select and enable inputs.
- A BCD-to-seven-segment decoder with an enable input.