Design a multiple-output logic circuit whose input is a BCD digit and whose outputs are defined as follows: 1f: Detects input digits that are divisible by 4, 2f: Detects numbers greater than or equal to 3, 3f: Detects numbers less than 7. Write a Verilog and/or VHDL model of the circuit. Also, realize the circuit using NAND gates.

An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0