Combinational Logic Implement a three-bit binary carry-lookahead adder. Its inputs are A0,,A2 and B0,,B2 for the two addends, and C0 for the carry in. Its outputs are Y0,,Y3

a. Write expressions for G0,,G2 and P0,,P2, the carry generate and propogate functions, in terms of the inputs.

b. Write sum-of-product expressions for C1,,C3 in terms of the Gs, Ps, and C0

c. Use these to write equations for the Ys (use for XOR)

d. Draw the carry-lookahead adder circuit corresponding to these equations using inverters, AND, NAND, OR, NOR, and XOR gates with as many inputs as youd like. The critical path should be four gates. Please be neat.