Implement the 4-bit Ripple Carry Adder (RCA) for unsinged integers using the 1bFA from problem 1 as building blocks. The adder has 9 inputs A(3:0), B(3:0), C0 and 5 outputs S(3:0), C4. a) Show the schematic. b) Estimate the circuit propagation delays for • Carry-in C0 to Carry-out C4, • Data-to-Carry-out C4.

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature