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A carry-lookahead adder is used to add together two 4-bit binary numbers X3:XO and Y3:YO. The carry out of adder stage 1 is generated using either of the following equivalent expressions of (1): C1 = G1+P1.GO+P1.PO.C-1 = G1+P1 (GO+PO-C-1) (1) (a) Tentukan kelewatan pergerakan maksima dari input X atau Y ke C1 secara berasingan bagi setiap ungkapan yang diberikan diatas. Andaikan get AND dan OR mempunyai kelewatan 1 unit. Determine the maximum propagation delay from any X or Y input to C1 separately for each of the expressions given above. Assume that AND and OR gates each have a delay of 1 unit (4 markah / marks) (b) Tentukan kelewatan pergerakan bagi sebarang input X atau Y apabila ia dilaksanakan bagi ungkapan tidak berfaktor C2, pembawa keluar bagi peringkat 2. Determine the propagation delay from any X or Y input when it is implemented from an unfactorized expression for C2, carry out for 2nd stage. (6 markah/ marks) A carry-lookahead adder is used to add together two 4-bit binary numbers X3:XO and Y3:YO. The carry out of adder stage 1 is generated using either of the following equivalent expressions of (1): C1 = G1+P1.GO+P1.PO.C-1 = G1+P1 (GO+PO-C-1) (1) (a) Tentukan kelewatan pergerakan maksima dari input X atau Y ke C1 secara berasingan bagi setiap ungkapan yang diberikan diatas. Andaikan get AND dan OR mempunyai kelewatan 1 unit. Determine the maximum propagation delay from any X or Y input to C1 separately for each of the expressions given above. Assume that AND and OR gates each have a delay of 1 unit (4 markah / marks) (b) Tentukan kelewatan pergerakan bagi sebarang input X atau Y apabila ia dilaksanakan bagi ungkapan tidak berfaktor C2, pembawa keluar bagi peringkat 2. Determine the propagation delay from any X or Y input when it is implemented from an unfactorized expression for C2, carry out for 2nd stage. (6 markah/ marks)