1. A bus-organized CPU has registers with 24 bits each, an ALU and a destination decoder The control word is given below. output Clock Input R1 R2 SELA SELB Load MUX A bus B bus decoder Arithmetic 1 gic unit ALU) SELD OPR Output SELA SELB SELD OPR 4 4 4 How many multiplexers in the A-B buses, and what is the size of each multiplexer a- BUS A BUS B Multiplexer inputs to o b- If the data transfer from each register to MUXA-25 ns and MUXB-25 ns and ALU needs 45 ns to produce an output, what is the total time needed to output the result of an operation that needs data from registers? Total time If the decoder is removed and replaced with logical 1, what is the effect of this change and does the operation give the correct result? Select the correct answer from the following c- Selectioin The result is correct but all registers lose their initial values The result is incorrect and the first register loses its initial value The result correct and only the first register loses its initial value The result is incorrect and all registers retain their initial values. The result is incorrect and all registers lose their initial values b- 1. A bus-organized CPU has registers with 24 bits each, an ALU and a destination decoder The control word is given below. output Clock Input R1 R2 SELA SELB Load MUX A bus B bus decoder Arithmetic 1 gic unit ALU) SELD OPR Output SELA SELB SELD OPR 4 4 4 How many multiplexers in the A-B buses, and what is the size of each multiplexer a- BUS A BUS B Multiplexer inputs to o b- If the data transfer from each register to MUXA-25 ns and MUXB-25 ns and ALU needs 45 ns to produce an output, what is the total time needed to output the result of an operation that needs data from registers? Total time If the decoder is removed and replaced with logical 1, what is the effect of this change and does the operation give the correct result? Select the correct answer from the following c- Selectioin The result is correct but all registers lose their initial values The result is incorrect and the first register loses its initial value The result correct and only the first register loses its initial value The result is incorrect and all registers retain their initial values. The result is incorrect and all registers lose their initial values b